archwiki: allow uploading WOFF2 format fonts

https://wiki.archlinux.org/title/Template:Text_art needs a consistent font.

Discussed in https://wiki.archlinux.org/title/Template_talk:Text_art#Use_of_non-ASCII_characters

roles/archwiki/templates/LocalSettings.php.j2

@@ -190,6 +190,9 @@ $wgUseInstantCommons  = false;
 $wgFileExtensions[] = 'svg';
 $wgSVGNativeRendering = true;
 
+## Allow uploading WOFF2 fonts
+$wgFileExtensions[] = 'woff2'
+
 
 ##
 ## Skin settings