Update README.md (#563)

* Update README.md

* Update README.md

docs-2.0/README.md

@@ -2,9 +2,7 @@
 
 !!! note "This manual is revised on {{ now().year }}-{{ now().month }}-{{ now().day }}, with [GitHub commit](https://github.com/vesoft-inc/nebula-docs) {{ git.short_commit }}."
 
-Nebula Graph is a distributed, scalable, and lightning-fast graph database.
-
-It is the optimal solution in the world capable of hosting graphs with dozens of billions of vertices (nodes) and trillions of edges with millisecond latency.
+Nebula Graph is a distributed, scalable, and lightning-fast graph database. It is the optimal solution in the world capable of hosting graphs with dozens of billions of vertices (nodes) and trillions of edges with millisecond latency.
 
 ## Getting started
 
@@ -15,11 +13,11 @@ It is the optimal solution in the world capable of hosting graphs with dozens of
 
 ## Other Sources
 
-- [Nebula Graph Homepage](https://nebula-graph.com.cn/)
-- [Forum](https://discuss.nebula-graph.com.cn/)
-- [Blog](https://nebula-graph.com.cn/posts/)
+- [Nebula Graph Homepage](https://nebula-graph.io/)
+- [Forum](https://discuss.nebula-graph.io/)
+- [Blog](https://nebula-graph.io/posts/)
 - [Video](https://www.youtube.com/channel/UC73V8q795eSEMxDX4Pvdwmw)
-- [English](https://docs.nebula-graph.io/)
+- [Chinese Docs](https://docs.nebula-graph.com.cn/master/)
 
 ## Graphic Illustrations
 
@@ -45,4 +43,8 @@ It is the optimal solution in the world capable of hosting graphs with dozens of
 
 !!! compatibility
 
-    The compatibility between nGQL and openCypher, or between the current version of nGQL and its prior ones. 
+    The compatibility between nGQL and openCypher, or between the current version of nGQL and its prior ones. 
+
+!!! enterpriseonly
+
+    Differences between Open Source and Enterprise Package.