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Wikipedia experts: in the Android app, articles have subtitles. The one for “Personal wiki” has been vandalised. I can see from the edit history that the article body had similar vandalism, quickly reverted.
1. I can edit this "article description" in the app. How can I do this on the web?
2. Is there edit history for this subtitle/description?
@legoktm that did the job, thanks!
Server run by the main developers of the project 
It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!
@wjt it comes from Wikidata, see https://www.wikidata.org/w/index.php?title=Q2579911&oldid=957599083
Removing it from there should fix it. See also https://en.wikipedia.org/wiki/Wikipedia:Short_description which explains how descriptions can be added to Wikipedia articles themselves.