From this question: Include posts edited by the Community user in searches with wiki:yes/true/1
What are the purposes of posts edited by the user Community, rules, value of those type of posts etc.?
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The Community user owns all suggested edits from anonymous users.
However, from your screenshot, it appears that the edit was done in 2017. Hence, it is likely part of the transition from HTTP to HTTPS. At that time, the Community user replaced all links in HTTP with HTTPS. This can be identified from the Revision History:
Furthermore, the Community user also assisted in editing posts during the migration to CommonMark this year.
See more information about the Community user at Who is the Community user?.