This quote expresses what I want better than I do:
By default, MediaWiki page titles are case-sensitive. This means that “Funky Penguin” and “funky penguin” are two unique pages. This makes sense for Wikipedia, which maintains a massive and list of page names, which need to be accessible in multiple languages.
For a small internal wiki though, it’s less than ideal
Can I make page titles case-insensitive?
The instructions I could find are here: https://www.funkypenguin.co.nz/blog/make-mediawiki-page-names-case-insensitive-including-semantic-queries/#how-to-make-mediawiki-case-insensitive
Will this work on Miraheze?
Who needs to approve and implement it?