Add clarification about MongoDB extension

Author: sis0k0

docs/70-indexing/1-create-compound-index.mdx

@@ -139,7 +139,7 @@ As soon as the application starts, you will see log entries showing the creation
 
 ## Verify that the index is created
 
-1. Open the **VS Code extension** from the sidebar on the left.
+1. Open the **VS Code extension** (leaf icon) from the sidebar on the left.
 1. Click **Add Connection**.
 1. In the welcome screen, click **Connect** under the **Connect with Connection String** section.
 1. Enter the MongoDB connection string from your Atlas cluster, making sure to replace the **password placeholder**.