Prevent opening a new page when using Google Feedback.

Author: nicolasgarnier

codelab-elements/google-codelab/google_codelab.soy

@@ -85,7 +85,7 @@
     </ol>
   </div>
   <div class="metadata">
-    <a target="_blank" {if $feedback}href="{$feedback}"{else}href="#" id="codelab-feedback"{/if}>
+    <a {if $feedback}target="_blank" href="{$feedback}"{else}href="#" id="codelab-feedback"{/if}>
       <i class="material-icons">bug_report</i> Report a mistake
     </a>
   </div>