Options: add a "Learn more" link to Android Apps section and tweak strings

chrome/app/chromeos_strings.grdp

Index: chrome/app/chromeos_strings.grdp
diff --git a/chrome/app/chromeos_strings.grdp b/chrome/app/chromeos_strings.grdp
index 7c3b2564914f4fcc5b0554cf45fb3b9fdfd76955..feaad6af8d97899df302338636ecb93fde815a8e 100644
--- a/chrome/app/chromeos_strings.grdp
+++ b/chrome/app/chromeos_strings.grdp
@@ -6627,10 +6627,10 @@ All users must sign out to continue.
     Android Apps
   </message>
   <message name="IDS_OPTIONS_ARC_ENABLE" desc="Label for the checkbox that enables Android apps.">
-    Enable Android Apps to run on your Chromebook.
+    Enable Android Apps on your Chromebook.
   </message>
   <message name="IDS_OPTIONS_ARC_MANAGE_APPS" desc="Label for launching  Android apps settings.">
-    Manage your Android apps via <ph name="BEGIN_LINK">&lt;a is="action-link" id="android-apps-settings-link" role="link"&gt;</ph>App Settings<ph name="END_LINK">&lt;/a&gt;</ph>.
+    Manage your Android apps in <ph name="BEGIN_LINK">&lt;a is="action-link" id="android-apps-settings-link" role="link"&gt;</ph>Settings<ph name="END_LINK">&lt;/a&gt;</ph>.
   </message>
   <message name="IDS_ARC_NOTIFICATION_TITLE" desc="Title of the first-run notification that enables Android apps.">
     Google Play Store