remote-mediawiki doc: link to MediaWiki's current version

Amend a comment in the test.config file to point to the latest
upstream version, which makes it easier for the user to tweak this.

Signed-off-by: Ævar Arnfjörð Bjarmason <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: avar

contrib/mw-to-git/t/test.config

@@ -31,6 +31,9 @@ WEB_WWW=$WEB/www
 # The variables below are used by the script to install a wiki.
 # You should not modify these unless you are modifying the script itself.
 # tested versions: 1.19.X -> 1.21.1
+#
+# See https://www.mediawiki.org/wiki/Download for what the latest
+# version is.
 MW_VERSION_MAJOR=1.21
 MW_VERSION_MINOR=1
 FILES_FOLDER=install-wiki