Update README, CONTRIBUTING.md: freenode -> libera.chat (#116)

CONTRIBUTING.md

@@ -48,7 +48,7 @@ Where modules have multiple parameters we recommend running through the 4-step m
 
 For general information on running the integration tests see the
 [Integration Tests page of the Module Development Guide](https://docs.ansible.com/ansible/devel/dev_guide/testing_integration.html#testing-integration),
-especially the section on configuration for cloud tests. For questions about writing tests the Ansible Kubernetes community can be found on Freenode IRC as detailed below.
+especially the section on configuration for cloud tests. For questions about writing tests the Ansible Kubernetes community can be found on Libera.Chat IRC as detailed below.
 
 ### Updating documentation
 
@@ -73,8 +73,8 @@ Please read and familiarize yourself with this document.
 
 ### IRC
 Our IRC channels may require you to register your nickname. If you receive an error when you connect, see
-[Freenode's Nickname Registration guide](https://freenode.net/kb/answer/registration) for instructions.
+[Libera.Chat's Nickname Registration guide](https://libera.chat/guides/registration) for instructions.
 
-The `#ansible-kubernetes` channel on Freenode IRC is the main and official place to discuss use and development of the `kubernetes.core` collection.
+The `#ansible-kubernetes` channel on [libera.chat](https://libera.chat/) IRC is the main and official place to discuss use and development of the `kubernetes.core` collection.
 
 For more information about Ansible's Kubernetes integration, browse the resources in the [Kubernetes Working Group](https://github.com/ansible/community/wiki/Kubernetes) Community wiki page.

README.md

@@ -207,7 +207,7 @@ The process for uploading a supported release to Automation Hub is documented se
 
 ## More Information
 
-For more information about Ansible's Kubernetes integration, join the `#ansible-kubernetes` channel on Freenode IRC, and browse the resources in the [Kubernetes Working Group](https://github.com/ansible/community/wiki/Kubernetes) Community wiki page.
+For more information about Ansible's Kubernetes integration, join the `#ansible-kubernetes` channel on [libera.chat](https://libera.chat/) IRC, and browse the resources in the [Kubernetes Working Group](https://github.com/ansible/community/wiki/Kubernetes) Community wiki page.
 
 ## License