(refactor): Fixed format of the with/if blocks

templates/send_update.html

@@ -15,11 +15,11 @@
     <a href="{{ url_for('logout') }}">Logout</a>
   </p>
   {% with messages = get_flashed_messages() %}
-  {% if messages %}
-  {% for message in messages %}
-  <div class="flash">{{ message }}</div>
-  {% endfor %}
-  {% endif %}
+    {% if messages %}
+      {% for message in messages %}
+        <div class="flash">{{ message }}</div>
+      {% endfor %}
+    {% endif %}
   {% endwith %}
 
   <form action="{{ url_for('send_update') }}" method="POST">