Fix comment syntax for Vale in VSCode section of setup tutorial

- Change HTML comment syntax to JSX-style comments for Vale compatibility

Author: hawkeyexl

docs/get-started/tutorials/set-up-your-test-environment.mdx

@@ -37,11 +37,11 @@ You can use Doc Detective directly against your production site. For testing, it
          ```
       </TabItem>
       <TabItem value='vscode' label='VSCode'>
-         <!-- vale off -->
+         {/* vale off */}
 
          In VSCode, search for and install the [Live Server](https://marketplace.visualstudio.com/items?itemName=ritwickdey.LiveServer) extension. It gives you a local development server with live reload capability.
 
-         <!-- vale on -->
+         {/* vale on */}
 
          :::info
          You need to set the port number to `8080` in your VSCode settings to match the Doc Detective tutorials.