Fix private input name

templates/add_link.mustache

@@ -14,7 +14,7 @@
     </div>
     <div class="private">
       <label for="private">Private?</label>
-      <input name=private" type="checkbox"/>
+      <input name="private" type="checkbox"/>
     </div>
     <div class="tags">
       <label for="tags">Tags</label>