mediawiki: Update maintainer description

legoktm · web-flow · commit 8dd4ba7020e4 · 2021-02-12T15:55:16.000-08:00
https://phabricator.wikimedia.org/T266186 raise some questions on who is actually maintaining this image. I think it makes more sense to describe this as something done by MediaWiki community members rather than as by the Wikimedia Foundation.
diff --git a/mediawiki/maintainer.md b/mediawiki/maintainer.md
@@ -1 +1 @@
-[Wikimedia Foundation & Docker Community](%%GITHUB-REPO%%)
+[MediaWiki community & Docker Community](%%GITHUB-REPO%%)

Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-[Wikimedia Foundation & Docker Community](%%GITHUB-REPO%%)`
	`1`	`+[MediaWiki community & Docker Community](%%GITHUB-REPO%%)`