fixing upload summary

Adding link to local description page:
(Upload log) !; 15:02 . . Malabarge (talk | contribs | block) uploaded File:Spiegelung 3.jpg ‎(Uploaded using Android Commons app) (Tags: Mobile app edit, Mobile edit)

Using the same edit summary as for edits made using the app, e.g.
(diff | hist) . . ! File:Lul.jpg‎; 14:48 . . (-20)‎ . . ‎Codedoper (talk | contribs | block)‎ (Added 1 categories. Removed template Uncategorized. Via Commons Mobile App) (Tags: Mobile app edit, Mobile edit)

Author: Steinsplitter

app/src/main/java/fr/free/nrw/commons/CommonsApplication.java

@@ -49,7 +49,7 @@ public class CommonsApplication extends Application {
     @Inject @Named("application_preferences") SharedPreferences applicationPrefs;
     @Inject @Named("prefs") SharedPreferences otherPrefs;
 
-    public static final String DEFAULT_EDIT_SUMMARY = "Uploaded using Android Commons app";
+    public static final String DEFAULT_EDIT_SUMMARY = "Uploaded using [[COM:MOA|Commons Mobile App]]";
 
     public static final String FEEDBACK_EMAIL = "commons-app-android@googlegroups.com";