fix: Switch discord->slack

CHANGELOG.md

@@ -12,6 +12,8 @@ This document is formatted according to the principles of [Keep A CHANGELOG](htt
 
 ### Added
 
+- Link in Readme to the Slack community. ([smikulcik])
+
 ### Changed
 
 ### Deprecated
@@ -42,3 +44,4 @@ This document is formatted according to the principles of [Keep A CHANGELOG](htt
 
 <!-- Contributors -->
 [jaysonesmith]:     https://github.com/jaysonesmith
+[smikulcik]:        https://github.com/smikulcik

README.md

@@ -366,7 +366,13 @@ Feel free to open a pull request. Note, if you wish to contribute an extension t
 please open an issue before to discuss whether these changes can be accepted. All backward incompatible changes are
 and will be treated cautiously.
 
-Reach out to the Godog community on our [Discord](https://discord.gg/nSWDF9s).
+Reach out to the community on our [Cucumber Slack Community](https://cucumberbdd.slack.com/).
+Join [here](https://cucumberbdd-slack-invite.herokuapp.com/).
+
+### Popular Cucumber Slack channels for Godog:
+- [#help-godog](https://cucumberbdd.slack.com/archives/CTNL1JCVA) - General Godog Adoption Help
+- [#committers-go](https://cucumberbdd.slack.com/archives/CA5NJPDJ4) - Golang focused Cucumber Contributors
+- [#committers](https://cucumberbdd.slack.com/archives/C62D0FK0E) - General Cucumber Contributors
 
 ## License