docs: editing and general fixes of medusa's learning resources (#7261)

* docs: editing and general fixes of medusa's learning resources

* fix build script

* update ui dependency

* fix build

* adjust next.js steps

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

@@ -26,11 +26,11 @@ Collecting this data allows us to understand certain details such as:
 
 ---
 
-## Medusa application Analytics
+## Medusa Application Analytics
 
 This section covers which data in the Medusa application are collected and how to opt out of it.
 
-### Collected Data in the Medusa application
+### Collected Data in the Medusa Application
 
 The following data is being collected on your Medusa application:
 
@@ -93,16 +93,16 @@ To enable anonymization of your data from the Medusa Admin:
 
 ### How to Opt-Out
 
-There are two ways to opt out of analytics collected in the Medusa Admin:
-
-1. Disable the feature flag that is enabled by default for the admin analytics feature:
+To opt out of analytics collection in the Medusa Admin, set the following environment variable:
 
 ```bash
 MEDUSA_FF_ANALYTICS=false
 ```
 
-2. Alternatively, on your Medusa Admin, you can disable tracking by following these steps:
+{/* 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.
+    4. Click on the “Submit and close” button. */}