Provide more context for "App-level permissions"

Test: Manual
bug: 34795904
Change-Id: I79d9895b4c719bbd742d1714b909b2766b279dff
diff --git a/res/values/strings.xml b/res/values/strings.xml
index da10faf..a441081 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -3039,7 +3039,8 @@
     <string name="location_mode_sensors_only_title">Device only</string>
     <!-- [CHAR LIMIT=30] Location settings screen, location off mode -->
     <string name="location_mode_location_off_title">Location off</string>
-    <!-- [CHAR LIMIT=30] Location settings screen, app-level permissions -->
+    <!-- [CHAR LIMIT=30] Location settings screen. It's a link that directs the user to a page that
+      shows the location permission setting for each installed app -->
     <string name="location_app_level_permissions">App-level permissions</string>
     <!-- [CHAR LIMIT=42] Location settings screen, sub category for recent location requests -->
     <string name="location_category_recent_location_requests">Recent location requests</string>