Fixes #1587 - Added connection string example (#13172)

Co-authored-by: Mike F. Robbins <[email protected]>

Author: mikefrobbins

src/Websites/Websites/help/Set-AzWebApp.md

@@ -62,6 +62,16 @@ Modifies an Azure Web App. (autogenerated)
 Set-AzWebApp -AppSettings <Hashtable> -Name 'ContosoWebApp' -ResourceGroupName 'Default-Web-WestUS'
 ```
 
+### Example 4
+
+The following example creates a connection string named myConnectionString for Web App
+ContosoWebApp. This replaces all existing connection strings for Web App ContosoWebApp.
+
+```powershell
+$hashtable =  @{myConnectionString = @{Type='MySql';Value='MySql Connection string'}}
+Set-AzWebApp -Name 'ContosoWebApp' -ResourceGroupName 'Default-Web-WestUS' -ConnectionString $hashtable
+```
+
 ## PARAMETERS
 
 ### -AlwaysOn