Update changelog.md

Author: misaochan

CHANGELOG.md

@@ -1,12 +1,6 @@
 # Wikimedia Commons for Android
 
-## v2.13.1
-- Added OpenStreetMap attribution
-- Fixed various crashes
-- Fixed SQLite error in Nearby map
-- Fixed issue with Nearby uploads not being associated with Wikidata p18
-
-## v2.13.0
+## v2.13
 - New media details UI, ability to zoom and pan around image
 - Added suggestions for a place that needs photos if user uploads a photo that is near one of them
 - Modifications and fixes to Nearby filters based on user feedback