Add Uptime section to the about page

templates/about.html

@@ -29,6 +29,12 @@ <h2>What is this?</h2>
   <p>
     Or you can start with <a href="{{ relative_path_for('swagger') }}" target="_blank">Swagger Playground</a>.
   </p>
+  <h2>Uptime</h2>
+  <div>
+    We are focusing on 100% uptime.
+    For now, it is like this for the last three months, and we are doing everything to stay online without downtimes.
+    Check if the service online you can <a href="https://stats.uptimerobot.com/KjD5zt80pL/796263225" target="_blank">here</a>.
+  </div>
   <h2>Key Features</h2>
   <div>
     <h3>Comprehensive Access</h3>