Link to Yomitan wiki anki setup (#1622)

Added link to anki setup in anki header

ext/settings.html

@@ -1644,6 +1644,8 @@ <h1>Yomitan Settings</h1>
                 Yomitan supports automatic flashcard creation for <a href="https://apps.ankiweb.net/" target="_blank" rel="noopener noreferrer">Anki</a>,
                 a free application designed to assist in remembering information.
                 This feature requires installation of the <a href="https://foosoft.net/projects/anki-connect/" target="_blank" rel="noopener noreferrer">AnkiConnect</a> plugin.
+                <br>
+                See the <a href="https://yomitan.wiki/anki/" target="_blank" rel="noopener noreferrer">Yomitan wiki</a> for a setup guide.
             </p>
             <p>
                 <a tabindex="0" class="more-toggle" data-parent-distance="3">Less&hellip;</a>