Update public_api.md

Author: soniyadotp

contributor_docs/public_api.md

@@ -217,3 +217,16 @@ No body
 |---------------|-------------------------|
 | 200 OK        | Sketch has been deleted |
 | 404 Not Found | Sketch does not exist   |
+
+
+### Enabling Access Token UI in Settings Page
+
+To enable the Access Token UI in the Settings page, follow these steps:
+
+1. Navigate to the `.env` file in your project.
+2. Locate the line specifying UI_ACCESS_TOKEN_ENABLED.
+3. Set the value to `true`, as shown below:
+
+```bash
+UI_ACCESS_TOKEN_ENABLED=true
+