README.md, CONTRIBUTING.md: Freenode -> Libera.Chat (#379)

README.md, CONTRIBUTING.md: Freenode -> Libera.Chat

Reviewed-by: Abhijeet Kasurde
             https://github.com/Akasurde

CONTRIBUTING.md

@@ -65,7 +65,7 @@ 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 AWS community can
-be found on Freenode IRC as detailed below.
+be found on Libera.Chat IRC as detailed below.
 
 
 ### Code of Conduct
@@ -75,7 +75,7 @@ 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-aws` channel on Freenode irc is the main and official place to discuss use and development
+The `#ansible-aws` channel on [irc.libera.chat](https://libera.chat/) is the main and official place to discuss use and development
 of the `amazon.aws` collection.

README.md

@@ -130,7 +130,7 @@ We welcome community contributions to this collection. If you find problems, ple
 
 You can also join us on:
 
-- Freenode IRC - ``#ansible-aws`` Freenode channel
+- IRC - the ``#ansible-aws`` [irc.libera.chat](https://libera.chat/) channel
 
 ### More information about contributing