docs: add notes + missing links for user guide (#11621)

* docs: add notes + missing links for user guide

* fix build errors

* fixes

www/apps/resources/app/usage/page.mdx

@@ -98,11 +98,3 @@ To opt out of analytics collection in the Medusa Admin, set the following enviro
 ```bash
 MEDUSA_FF_ANALYTICS=false
 ```
-
-{/* TODO check steps after admin is ready */}
-
-{/* 2. Alternatively, on your Medusa Admin, you can disable tracking by following these steps:
-    1. Go to Settings → Personal Information.
-    2. In the Usage insights section, click on the “Edit preferences” button.
-    3. Enable the “Opt out of sharing my usage data” toggle.
-    4. Click on the “Submit and close” button. */}