update invite regex to neulo's suggested fix

Author: treeben77

static/regexes.js

@@ -83,10 +83,11 @@ const regex_types = [
         copy_btn: document.getElementById("copy-regex-invite-links"),
         output: document.getElementById("regex-output-invite-links"),
         generator: function(settings) {
+            const main_invites = `(?:https?:\\/\\/)?(?:www\\.|ptb\\.|canary\\.)?(?:discord(?:app)?\\.(?:(?:com|gg)\\/(?:invite|servers)\\/+[a-z0-9-_]+)|discord\\.gg\\/+[a-z0-9-_]+)`;
             if (settings.third_party.checked) {
-                return "(?:https?://)?(?:www.|ptb.|canary.)?(?:discord(?:app)?\\.(?:(?:com|gg)/(?:invite|servers)/[a-z0-9-_]+)|discord\\.gg/[a-z0-9-_]+)|(?:https?://)?(?:www\\.)?(?:dsc\\.gg|invite\\.gg+|discord\\.link|(?:discord\\.(gg|io|me|li|id))|disboard\\.org)/[a-z0-9-_/]+";
+                return `${main_invites}|discord\\.gg/[a-z0-9-_]+)|(?:https?://)?(?:www\\.)?(?:dsc\\.gg|invite\\.gg+|discord\\.link|(?:discord\\.(gg|io|me|li|id))|disboard\\.org)/[a-z0-9-_/]+`;
             } else {
-                return `(?:https?://)?(?:www.|ptb.|canary.)?(?:discord(?:app)?\\.(?:(?:com|gg)/(?:invite|servers)/[a-z0-9-_]+)|discord\\.gg/[a-z0-9-_]+)`;
+                return main_invites;
             };
         },
         setting_elements: {