ninja: Fix slack channel names in docs

doc/source/bugs.rst

@@ -18,7 +18,7 @@ Reporting Bugs
 ==============
 
 If you encounter a problem with Cassandra, the first places to ask for help are the :ref:`user mailing list
-<mailing-lists>` and the ``Cassandra`` :ref:`Slack room <slack>`.
+<mailing-lists>` and the ``cassandra`` :ref:`Slack room <slack>`.
 
 If, after having asked for help, you suspect that you have found a bug in Cassandra, you should report it by opening a
 ticket through the `Apache Cassandra JIRA <https://issues.apache.org/jira/browse/CASSANDRA>`__. Please provide as much

doc/source/contactus.rst

@@ -17,7 +17,7 @@
 Contact us
 ==========
 
-You can get in touch with the Cassandra community either via the mailing lists or slack_ rooms.
+You can get in touch with the Cassandra community either via the mailing lists or :ref:`Slack rooms <slack>`.
 
 .. _mailing-lists:
 
@@ -40,9 +40,11 @@ email to confirm your subscription. Make sure to keep the welcome email as it co
 unsubscribe.
 
 .. _slack:
-Slack
-_____
-To chat with developers or users in real-time, join our rooms on `ASF Slack <https://s.apache.org/slack-invite>`__:
-- ``#cassandra`` - for user questions and general discussions.
-- ``#cassandra-dev`` - strictly for questions or discussions related to Cassandra development.
+
+Slack
+-----
+To chat with developers or users in real-time, join our rooms on `ASF Slack <https://s.apache.org/slack-invite>`__:
+
+- ``cassandra`` - for user questions and general discussions.
+- ``cassandra-dev`` - strictly for questions or discussions related to Cassandra development.
 

doc/source/development/release_process.rst

@@ -244,7 +244,7 @@ Fill out the following email template and send to both user and dev mailing list
 Update Slack Cassandra topic
 ---------------------------
 
-Update Cassandra topic in Slack::
+Update topic in ``cassandra`` :ref:`Slack room <slack>`
     /topic cassandra.apache.org | Latest releases: 3.11.4, 3.0.18, 2.2.14, 2.1.21 | ask, don't ask to ask
 
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