Fixed style issue

Author: Mohamed Yilmaz Ibrahim

src/azure-cli/azure/cli/command_modules/identity/_help.py

@@ -36,7 +36,7 @@
   - name: Update an identity to restrict assignment within an Azure region.
     text: |
         az identity update --name MyIdentity --resource-group MyResourceGroup --isolation-scope Regional
-  
+
   - name: Update an identity to restrict assignment to specific resources.
     text: |
         az identity update --name MyIdentity --resource-group MyResourceGroup --resource-restriction '{"providers": ["Microsoft.Compute", "Microsoft.Storage/Accounts"]}'