formula description (#1647)

* update description for formula field

* revert generated file changes

* use markdown

src/Microsoft.SqlTools.ServiceLayer/Localization/sr.resx

@@ -5056,7 +5056,7 @@ The Query Processor estimates that implementing the following index could improv
     <comment></comment>
   </data>
   <data name="TableColumnComputedFormulaDescription" xml:space="preserve">
-    <value>Formula that the column uses if it is a computed column</value>
+    <value>An expression that defines the value of a computed column. [More information](https://docs.microsoft.com/en-us/sql/t-sql/statements/alter-table-computed-column-definition-transact-sql#computed_column_expression)</value>
     <comment></comment>
   </data>
   <data name="TableColumnIsComputedPersistedTitle" xml:space="preserve">

src/Microsoft.SqlTools.ServiceLayer/Localization/sr.strings

@@ -2348,7 +2348,7 @@ TableColumnComputedGroupTitle = Computed Column Specifications
 TableColumnIsComputedTitle = Is Computed
 TableColumnIsComputedDescription = Specifies whether the column is a computed column
 TableColumnComputedFormulaTitle = Formula
-TableColumnComputedFormulaDescription = Formula that the column uses if it is a computed column
+TableColumnComputedFormulaDescription = An expression that defines the value of a computed column. [More information](https://docs.microsoft.com/en-us/sql/t-sql/statements/alter-table-computed-column-definition-transact-sql#computed_column_expression)
 TableColumnIsComputedPersistedTitle = Is Persisted
 TableColumnIsComputedPersistedDescription = Whether the computed column is saved with the data source
 TableColumnIsComputedPersistedNullableTitle = Is Persisted Nullable

src/Microsoft.SqlTools.ServiceLayer/Localization/sr.xlf

@@ -6059,8 +6059,8 @@ The Query Processor estimates that implementing the following index could improv
         <note></note>
       </trans-unit>
       <trans-unit id="TableColumnComputedFormulaDescription">
-        <source>Formula that the column uses if it is a computed column</source>
-        <target state="new">Formula that the column uses if it is a computed column</target>
+        <source>An expression that defines the value of a computed column. [More information](https://docs.microsoft.com/en-us/sql/t-sql/statements/alter-table-computed-column-definition-transact-sql#computed_column_expression)</source>
+        <target state="new">An expression that defines the value of a computed column. [More information](https://docs.microsoft.com/en-us/sql/t-sql/statements/alter-table-computed-column-definition-transact-sql#computed_column_expression)</target>
         <note></note>
       </trans-unit>
       <trans-unit id="TableColumnComputedFormulaTitle">