fix syntax problem for values

docs-2.0/2.quick-start/4.nebula-graph-crud.md

@@ -188,7 +188,7 @@ Users can use the `INSERT` statement to insert vertices or edges based on existi
     ```ngql
     INSERT VERTEX [IF NOT EXISTS] <tag_name> (<property_name>[, <property_name>...])
     [, <tag_name> (<property_name>[, <property_name>...]), ...]
-    {VALUES | VALUE} <vid>: (<property_value>[, <property_value>...])
+    VALUES <vid>: (<property_value>[, <property_value>...])
     [, <vid>: (<property_value>[, <property_value>...];
     ```
 
@@ -198,7 +198,7 @@ Users can use the `INSERT` statement to insert vertices or edges based on existi
 
     ```ngql
     INSERT EDGE [IF NOT EXISTS] <edge_type> (<property_name>[, <property_name>...])
-    {VALUES | VALUE} <src_vid> -> <dst_vid>[@<rank>] : (<property_value>[, <property_value>...])
+    VALUES <src_vid> -> <dst_vid>[@<rank>] : (<property_value>[, <property_value>...])
     [, <src_vid> -> <dst_vid>[@<rank>] : (<property_name>[, <property_name>...]), ...];
     ```
 
@@ -445,7 +445,7 @@ Users can use the `UPDATE` or the `UPSERT` statements to update existing data.
 * Insert a vertex with VID `player111` and `UPSERT` it.
 
     ```ngql
-    nebula> INSERT VERTEX player(name,age) values "player111":("David West", 38);
+    nebula> INSERT VERTEX player(name,age) VALUES "player111":("David West", 38);
 
     nebula> UPSERT VERTEX "player111" SET player.name = "David", player.age = $^.player.age + 11 \
             WHEN $^.player.name == "David West" AND $^.player.age > 20 \

docs-2.0/2.quick-start/6.cheatsheet-for-ngql.md

@@ -250,7 +250,7 @@
   ```
   LOOKUP ON {<vertex_tag> | <edge_type>} 
   [WHERE <expression> [AND <expression> ...]] 
-  [YIELD <return_list> [AS <alias>]]
+  YIELD <return_list> [AS <alias>]
   ```
 
   | Pattern                | Example                                                         | Description                                           |
@@ -270,7 +270,7 @@
   GO [[<M> TO] <N> STEPS ] FROM <vertex_list>
   OVER <edge_type_list> [{REVERSELY | BIDIRECT}]
   [ WHERE <conditions> ]
-  [YIELD [DISTINCT] <return_list>]
+  YIELD [DISTINCT] <return_list>
   [| GROUP BY {col_name | expr | position} YIELD <col_name>]
   [| ORDER BY <expression> [{ASC | DESC}]]
   [| LIMIT [<offset_value>,] <number_rows>]
@@ -294,7 +294,7 @@
   ```
   FETCH PROP ON {<tag_name>[, tag_name ...] | *} 
   <vid> [, vid ...] 
-  [YIELD <return_list> [AS <alias>]]
+  YIELD <return_list> [AS <alias>]
   ```
 
   | Example                                                         | Description                                                         |
@@ -411,7 +411,7 @@
 
 | Statement                                                         | Syntax                                                         | Example                                                         | Description                                                         |
 | ------------------------------------------------------------ | ------------------------------------------------------------ | ------------------------------------------------------------ | ------------------------------------------------------------ |
-| [INSERT VERTEX](../3.ngql-guide/12.vertex-statements/1.insert-vertex.md) | `INSERT VERTEX [IF NOT EXISTS] <tag_name> (<prop_name_list>) [, <tag_name> (<prop_name_list>), ...]  {VALUES | VALUE} VID: (<prop_value_list>[, <prop_value_list>])` | `INSERT VERTEX t2 (name, age) VALUES "13":("n3", 12), "14":("n4", 8)` | Inserts one or more vertices into a graph space in Nebula Graph.           |
+| [INSERT VERTEX](../3.ngql-guide/12.vertex-statements/1.insert-vertex.md) | `INSERT VERTEX [IF NOT EXISTS] <tag_name> (<prop_name_list>) [, <tag_name> (<prop_name_list>), ...]  VALUES VID: (<prop_value_list>[, <prop_value_list>])` | `INSERT VERTEX t2 (name, age) VALUES "13":("n3", 12), "14":("n4", 8)` | Inserts one or more vertices into a graph space in Nebula Graph.           |
 | [DELETE VERTEX](../3.ngql-guide/12.vertex-statements/4.delete-vertex.md) | `DELETE VERTEX <vid> [, <vid> ...]`                          | `DELETE VERTEX "team1"`                                      | Deletes vertices and the related incoming and outgoing edges of the vertices.                             |
 | [UPDATE VERTEX](../3.ngql-guide/12.vertex-statements/2.update-vertex.md) | `UPDATE VERTEX ON <tag_name> <vid> SET <update_prop> [WHEN <condition>] [YIELD <output>]` | `UPDATE VERTEX ON player "player101" SET age = age + 2 `     | Updates properties on tags of a vertex.                                        |
 | [UPSERT VERTEX](../3.ngql-guide/12.vertex-statements/3.upsert-vertex.md) | `UPSERT VERTEX ON <tag> <vid> SET <update_prop> [WHEN <condition>] [YIELD <output>]` | `UPSERT VERTEX ON player "player667" SET age = 31`           | The `UPSERT` statement is a combination of `UPDATE` and `INSERT`. You can use `UPSERT VERTEX` to update the properties of a vertex if it exists or insert a new vertex if it does not exist. |
@@ -422,7 +422,7 @@
 
 | Statement                                                         | Syntax                                                         | Example                                                         | Description                                                         |
 | ------------------------------------------------------------ | ------------------------------------------------------------ | ------------------------------------------------------------ | ------------------------------------------------------------ |
-| [INSERT EDGE](../3.ngql-guide/13.edge-statements/1.insert-edge.md) | `INSERT EDGE [IF NOT EXISTS] <edge_type> ( <prop_name_list> ) {VALUES | VALUE} <src_vid> -> <dst_vid>[@<rank>] : ( <prop_value_list> ) [, <src_vid> -> <dst_vid>[@<rank>] : ( <prop_value_list> ), ...]` | `INSERT EDGE e2 (name, age) VALUES "11"->"13":("n1", 1)`     | Inserts an edge or multiple edges into a graph space from a source vertex (given by src_vid) to a destination vertex (given by dst_vid) with a specific rank in Nebula Graph.           |
+| [INSERT EDGE](../3.ngql-guide/13.edge-statements/1.insert-edge.md) | `INSERT EDGE [IF NOT EXISTS] <edge_type> ( <prop_name_list> ) VALUES <src_vid> -> <dst_vid>[@<rank>] : ( <prop_value_list> ) [, <src_vid> -> <dst_vid>[@<rank>] : ( <prop_value_list> ), ...]` | `INSERT EDGE e2 (name, age) VALUES "11"->"13":("n1", 1)`     | Inserts an edge or multiple edges into a graph space from a source vertex (given by src_vid) to a destination vertex (given by dst_vid) with a specific rank in Nebula Graph.           |
 | [DELETE EDGE](../3.ngql-guide/12.vertex-statements/3.upsert-vertex.md) | `DELETE EDGE <edge_type> <src_vid> -> <dst_vid>[@<rank>] [, <src_vid> -> <dst_vid>[@<rank>] ...]` | `DELETE EDGE serve "player100" -> "team204"@0`               | Deletes one edge or multiple edges at a time.                            |
 | [UPDATE EDGE](../3.ngql-guide/13.edge-statements/2.update-edge.md) | `UPDATE EDGE ON <edge_type> <src_vid> -> <dst_vid> [@<rank>] SET <update_prop> [WHEN <condition>] [YIELD <output>]` | `UPDATE EDGE ON serve "player100" -> "team204"@0 SET start_year = start_year + 1` | Updates properties on an edge.                                    |
 | [UPSERT EDGE](../3.ngql-guide/12.vertex-statements/3.upsert-vertex.md) | `UPSERT EDGE ON <edge_type> <src_vid> -> <dst_vid> [@rank] SET <update_prop> [WHEN <condition>] [YIELD <properties>]` | `UPSERT EDGE on serve "player666" -> "team200"@0 SET end_year = 2021` | The `UPSERT` statement is a combination of `UPDATE` and `INSERT`. You can use `UPSERT EDGE` to update the properties of an edge if it exists or insert a new edge if it does not exist. |

docs-2.0/3.ngql-guide/12.vertex-statements/1.insert-vertex.md

@@ -10,7 +10,7 @@ Running the `INSERT VERTEX` statement requires some [privileges](../../7.data-se
 
 ```ngql
 INSERT VERTEX [IF NOT EXISTS] <tag_name> (<prop_name_list>) [, <tag_name> (<prop_name_list>), ...]
-     {VALUES | VALUE} VID: (<prop_value_list>[, <prop_value_list>])
+VALUES VID: (<prop_value_list>[, <prop_value_list>])
 
 prop_name_list:
   [prop_name [, prop_name] ...]
@@ -49,7 +49,7 @@ Examples are as follows.
 ```ngql
 # The following examples create tag t1 with no property and inserts vertex "10" with no property.
 nebula> CREATE TAG IF NOT EXISTS t1();                   
-nebula> INSERT VERTEX t1() VALUE "10":(); 
+nebula> INSERT VERTEX t1() VALUES "10":(); 
 ```
 
 ```ngql

docs-2.0/3.ngql-guide/13.edge-statements/1.insert-edge.md

@@ -7,7 +7,7 @@ When inserting an edge that already exists, `INSERT VERTEX` **overrides** the ed
 ## Syntax
 
 ```ngql
-INSERT EDGE [IF NOT EXISTS] <edge_type> ( <prop_name_list> ) {VALUES | VALUE}
+INSERT EDGE [IF NOT EXISTS] <edge_type> ( <prop_name_list> ) VALUES 
 <src_vid> -> <dst_vid>[@<rank>] : ( <prop_value_list> )
 [, <src_vid> -> <dst_vid>[@<rank>] : ( <prop_value_list> ), ...];