Fix documentation of view release notes actions (#33851)

Follow up for: #33809 

Release Notes:

- N/A *or* Added/Fixed/Improved ...

crates/auto_update/src/auto_update.rs

@@ -35,7 +35,7 @@ actions!(
         Check,
         /// Dismisses the update error message.
         DismissErrorMessage,
-        /// Opens the release notes for the current version.
+        /// Opens the release notes for the current version in a browser.
         ViewReleaseNotes,
     ]
 );

crates/auto_update_ui/src/auto_update_ui.rs

@@ -15,7 +15,7 @@ use workspace::notifications::{NotificationId, show_app_notification};
 actions!(
     auto_update,
     [
-        /// Opens release notes in the browser for the current version.
+        /// Opens the release notes for the current version in a new tab.
         ViewReleaseNotesLocally
     ]
 );