Update default.html

Author: collabnix

_layouts/default.html

@@ -39,7 +39,7 @@ <h2 class="project-tagline">{{ page.description | default: site.description | de
         <a href="{{ site.github.repository_url }}" class="btn">View on GitHub</a>
       {% endif %}
       {% if site.show_downloads %}
-        <a href="https://join.slack.com/t/collabnix/shared_invite/enQtODgyMjk0MzU5ODQyLTM1MGI0M2EzMGM3MTNlYTI0OGFiNjY2NzI1OTY2N2E1Yjk1N2NjZDMzZDk1NmYyMTJiYTA1ODMyNDNlNzc3MjU" class="btn">Join Slack</a>
+        <a href="https://join.slack.com/t/collabnix/shared_invite/enQtOTMzNDQzODk2Mjg5LWNlNDU2Y2Y3ZTE2MzAyMGUwOGY4NGQ3N2E4ZjY3MjFiYzFhZjlhNWU5NmY1ZTBiM2NkM2U3NmY1N2NmODliMDk" class="btn">Join Slack</a>
      {% endif %}
         <marquee behavior="scroll" direction="left"> <h3> Upcoming Event : 29 - Feb -2020: Docker Bangalore Community ,Hurry Up, RSVP! </h3>
     <center> <button class="btn-hover color-1"><a href="https://events.docker.com/events/details/docker-bangalore-presents-meetup-51-kickstart-your-2020-container-journey-with-docker-kubernetes-kube101-workshop-contd/#/"> Log in to RSVP  </a> </button></marquee>