FIX: Remove g and m flags from autolink regex

app/assets/javascripts/discourse/dialects/autolink_dialect.js

@@ -3,7 +3,7 @@
   a hrefs for them.
 **/
 var urlReplacerArgs = {
-  matcher: /^((?:https?:(?:\/{1,3}|[a-z0-9%])|www\d{0,3}[.])(?:[^\s()<>]+|\([^\s()<>]+\))+(?:\([^\s()<>]+\)|[^`!()\[\]{};:'".,<>?«»“”‘’\s]))/gm,
+  matcher: /^((?:https?:(?:\/{1,3}|[a-z0-9%])|www\d{0,3}[.])(?:[^\s()<>]+|\([^\s()<>]+\))+(?:\([^\s()<>]+\)|[^`!()\[\]{};:'".,<>?«»“”‘’\s]))/,
   spaceOrTagBoundary: true,
 
   emitter: function(matches) {