fix: Update hello world guide to mention multiple catalog directories

src/markdown-pages/build-apps/build-hello-world-app.mdx

@@ -222,15 +222,15 @@ nr1 create
 
   <Step>
 
-Select **catalog**, which creates a stub in your project under the `catalog` directory. Here's how the results might look in your code editor:
+Select **catalog**, which creates a stub in your project under the `catalog` directory in the root directory and any launchers, nerdlets, or visualizations directories. Here's how the results might look in your code editor:
 
 ![Catalog stub](../../images/create-hello-world/new-catalog-stub.png)
 
   </Step>
 
   <Step>
 
-In the `catalog` directory of your project, add screenshots or various types of metadata to describe your project. For details about what you can add, see [Add catalog metadata and screenshots](https://docs.newrelic.com/docs/new-relic-one/use-new-relic-one/build-new-relic-one/discover-manage-applications-new-relic-one-catalog#clamshell-2).
+In the root `catalog` directory of your project, add screenshots or various types of metadata to describe your project. For details about what you can add, see [Add catalog metadata and screenshots](https://docs.newrelic.com/docs/new-relic-one/use-new-relic-one/build-new-relic-one/discover-manage-applications-new-relic-one-catalog#clamshell-2).
 
   </Step>