URL: https://translatewiki.net/wiki/Wikimedia:Commons-android-strings-categories skip explanation/ja
This is for the Android app, so it doesn't use normal wikitext markup. However, I'm not sure if this is some special syntax or something. Looking into the history of the file it does look a bit fishy, so I left a comment there on GitHub.
Should be fixed via https://github.com/commons-app/apps-android-commons/pull/1019 , thanks for bringing this to our notice!
@josephine_l: Thanks for the quick reaction and reply!