Encourage people to use GitHub discussions in place of the mailing list

.github/ISSUE_TEMPLATE/bug_report.md

@@ -7,11 +7,9 @@ about: Report a reproducible bug in the current release of NetBox
 <!--
     NOTE: IF YOUR ISSUE DOES NOT FOLLOW THIS TEMPLATE, IT WILL BE CLOSED.
 
-    This form is only for reproducible bugs. If you need assistance with
-    NetBox installation, or if you have a general question, DO NOT open an
-    issue. Instead, post to our mailing list:
-
-        https://groups.google.com/g/netbox-discuss
+    This form is only for reporting reproducible bugs. If you need assistance
+    with NetBox installation, or if you have a general question, please start a
+    discussion instead: https://github.com/netbox-community/netbox/discussions
 
     Please describe the environment in which you are running NetBox. Be sure
     that you are running an unmodified instance of the latest stable release

.github/ISSUE_TEMPLATE/feature_request.md

@@ -8,10 +8,8 @@ about: Propose a new NetBox feature or enhancement
     NOTE: IF YOUR ISSUE DOES NOT FOLLOW THIS TEMPLATE, IT WILL BE CLOSED.
 
     This form is only for proposing specific new features or enhancements.
-    If you have a general idea or question, please post to our mailing list
-    instead of opening an issue:
-
-        https://groups.google.com/g/netbox-discuss
+    If you have a general idea or question, please start a discussion instead:
+    https://github.com/netbox-community/netbox/discussions
 
     NOTE: Due to an excessive backlog of feature requests, we are not currently
     accepting any proposals which significantly extend NetBox's feature scope.

README.md

@@ -37,18 +37,21 @@ or join us in the **#netbox** Slack channel on [NetworkToCode](https://networkto
 ## Installation
 
 Please see [the documentation](http://netbox.readthedocs.io/en/stable/) for
-instructions on installing NetBox. To upgrade NetBox, please download the [latest release](https://github.com/netbox-community/netbox/releases)
-and run `upgrade.sh`.
+instructions on installing NetBox. To upgrade NetBox, please download the
+[latest release](https://github.com/netbox-community/netbox/releases) and
+run `upgrade.sh`.
 
 ## Providing Feedback
 
-Feature requests and bug reports must be submitted as GiHub issues. (Please be
-sure to use the [appropriate template](https://github.com/netbox-community/netbox/issues/new/choose).)
-For general discussion, please consider joining our [mailing list](https://groups.google.com/g/netbox-discuss).
+The best platform for general feedback, assistance, and other discussion is our
+[GitHub discussions](https://github.com/netbox-community/netbox/discussions).
+To report a bug or request a specific feature, please open a GitHub issue using
+the [appropriate template](https://github.com/netbox-community/netbox/issues/new/choose).
 
 If you are interested in contributing to the development of NetBox, please read
 our [contributing guide](CONTRIBUTING.md) prior to beginning any work.
 
 ## Related projects
 
-Please see [our wiki](https://github.com/netbox-community/netbox/wiki/Community-Contributions) for a list of relevant community projects.
+Please see [our wiki](https://github.com/netbox-community/netbox/wiki/Community-Contributions)
+for a list of relevant community projects.

docs/development/index.md

@@ -7,7 +7,8 @@ NetBox is maintained as a [GitHub project](https://github.com/netbox-community/n
 Communication among developers should always occur via public channels:
 
 * [GitHub issues](https://github.com/netbox-community/netbox/issues) - All feature requests, bug reports, and other substantial changes to the code base **must** be documented in an issue.
-* [The mailing list](https://groups.google.com/g/netbox-discuss) - The preferred forum for general discussion and support issues. Ideal for shaping a feature request prior to submitting an issue.
+* [GitHub discussions](https://github.com/netbox-community/netbox/discussions) - The preferred forum for general discussion and support issues. Ideal for shaping a feature request prior to submitting an issue.
+* [The mailing list](https://groups.google.com/g/netbox-discuss) - An alternative forum for general discussion (GitHub is preferred).
 * [#netbox on NetworkToCode](http://slack.networktocode.com/) - Good for quick chats. Avoid any discussion that might need to be referenced later on, as the chat history is not retained long.
 
 ## Governance