[css-fonts-3] Prefer GitHub for issues

Author: svgeesus

css-fonts-3/Fonts.src.html

@@ -127,7 +127,9 @@ <h2 class="no-num no-toc">[LONGSTATUS] [DATE]</h2>
     <dd><a href="https://www.w3.org/Bugs/Public/buglist.cgi?query_format=advanced&amp;product=CSS&amp;component=Fonts&amp;bug_status=NEW&amp;bug_status=ASSIGNED&amp;bug_status=REOPENED">CSS3 Fonts issues in Bugzilla</a>
     <dd><a href="https://github.com/w3c/csswg-drafts/labels/css-fonts-3">css-fonts-3 issues in github</a>
   <dt>Discussion:</dt>
-    <dd><a href="mailto:www-style@w3.org?subject=%5Bcss-fonts%5D%20feedback">www-style@w3.org</a>
+    <dd>
+      <a href="https://github.com/w3c/csswg-drafts/labels/css-fonts-3">on GitHub</a> (preferred),
+      or <a href="mailto:www-style@w3.org?subject=%5Bcss-fonts%5D%20feedback">www-style@w3.org</a>
          with subject line “<kbd>[css-fonts]
          <var>… message topic …</var></kbd>”
          (<a rel="discussion" href="https://lists.w3.org/Archives/Public/www-style/">archives</a>)</dd>