Bump the tag name

cache/installedVersion.json

@@ -1,4 +1,4 @@
 {
   "id": 782014,
-  "tag_name": "v2.7.5"
+  "tag_name": "v2.7.6"
 }

themes/twentyfifteen/layout.html.php

@@ -87,7 +87,7 @@
                     <?php endif;?>
                     <?php if (disqus()): ?>
                     <aside class="widget widget_meta">
-                        <h2 class="widget-title">Recent_comments</h2>
+                        <h2 class="widget-title">Recent comments</h2>
                         <script src="//<?php echo config('disqus.shortname');?>.disqus.com/recent_comments_widget.js?num_items=5&amp;hide_avatars=0&amp;avatar_size=48&amp;excerpt_length=200&amp;hide_mods=0" type="text/javascript"></script><style>li.dsq-widget-item {padding-top:15px;} img.dsq-widget-avatar {margin-right:5px;}</style>
                     </aside>
                     <?php endif;?>