MediaWiki core has this little problem that you could fix:

Receving a notification mail from the English Wikipedia. The from fields is
somewhat confusing:

From: MediaWiki Mail <wiki@wikimedia.org>

Should be changed to something like "Wiki[mp]edia notification system"
or something in that direction. The current from field adds to the
Mediawiki/Wikimedia/Wikipedia confusion.

Please replace $wgPasswordSenderName with a system message defaulting to "{{SITENAME}}" to clarify and allow translation.

See

Bug 32770 - Replace $wgPasswordSenderName with a system message defaulting to "{{SITENAME}}" to clarify and allow translation

Please ask any questions in the bug report. You will have better chances for quicker and better answers from the project maintainers and other community contributors.

Students are required to read Wikimedia's general instructions first. Patches should be submitted to Gerrit and reference the bug report in the commit message. Improvements to an initial patch must be submitted as an amendment  to the initial patch, not as new patches.