Open feedback links in new tab

source/app/web/statics/index.html

@@ -132,7 +132,7 @@
                 <span>{{ user }}</span><span class="slash">/</span>README<span class="md">.md</span>
               </div>
               <div class="readme">
-                <a href="https://github.com/lowlighter/metrics/discussions">Send feedback</a>
+                <a href="https://github.com/lowlighter/metrics/discussions" target="_blank">Send feedback</a>
               </div>
             </div>