Remove matrix from docs (#962)

docs/canonicalk8s/.sphinx/_templates/footer.html

@@ -112,6 +112,12 @@
     </div>
     {% endif %}
 
+    {% if slack %}
+    <div class="ask-slack">
+      <a class="muted-link" href="{{ slack }}">Ask a question on Slack</a>
+    </div>
+    {% endif %}
+
     {% if github_url and github_version and github_folder %}
 
     {% if github_issues %}

docs/canonicalk8s/custom_conf.py

@@ -86,7 +86,10 @@
 
     # Change to the Mattermost channel you want to link to
     # (use an empty value if you don't want to link)
-    'matrix': 'https://matrix.to/#/#k8s:ubuntu.com',
+    # 'matrix': 'https://matrix.to/#/#k8s:ubuntu.com',
+
+    # Adding slack channel
+    'slack': 'https://kubernetes.slack.com/archives/CG1V2CAMB',
 
     # Change to the GitHub URL for your project
     'github_url': 'https://github.com/canonical/k8s-snap',

docs/src/snap/reference/community.md

@@ -15,7 +15,6 @@ more experienced users. There are a number of ways to get in touch:
 
 - Using the [Kubernetes slack][slack]: find us in the #canonical-kubernetes
   channel
-- In the public [Matrix room][matrix]
 - On the [Ubuntu Discourse][discourse]
 
 For more formal support, please see the support options available to you on the
@@ -65,7 +64,6 @@ the guidelines for participation.
 <!-- LINKS -->
 
 [slack]: http://slack.kubernetes.io/
-[matrix]: https://matrix.to/#/#k8s:ubuntu.com
 [Discourse]: https://discourse.ubuntu.com/c/kubernetes/180
 [bugs]: https://github.com/canonical/k8s-snap/issues
 [Contributing guide]: /src/snap/howto/contribute.md