Add alt-text for gcal invites

README.md

@@ -2,7 +2,7 @@
 
 ![pre-commit tests](https://github.com/redhat-cop/controller_configuration/actions/workflows/pre-commit.yml/badge.svg)
 ![Galaxy Release](https://github.com/redhat-cop/controller_configuration/workflows/galaxy-release/badge.svg)
-<!-- markdownlint-disable-line MD033 MD034 --><a href="https://raw.githubusercontent.com/redhat-cop/controller_configuration/devel/docs/aap_config_as_code_public_meeting.ics"><img border="0" src="https://www.google.com/calendar/images/ext/gc_button1_en-GB.gif"></a>
+<!-- markdownlint-disable-line MD033 MD034 --><a href="https://raw.githubusercontent.com/redhat-cop/controller_configuration/devel/docs/aap_config_as_code_public_meeting.ics"><img border="0" alt="Google Calendar invite" src="https://www.google.com/calendar/images/ext/gc_button1_en-GB.gif"></a>
 <!-- Further CI badges go here as above -->
 
 This Ansible collection allows for easy interaction with an AWX or Ansible Controller server via Ansible roles using the AWX/Controller collection modules.
@@ -185,7 +185,7 @@ More information about contributing can be found in our [Contribution Guidelines
 We have a community meeting every 4 weeks. Find the agenda in the [issues](https://github.com/redhat-cop/controller_configuration/issues) and the calendar invitation below:
 
 <!-- markdownlint-disable-next-line MD033 MD034 -->
-<a target="_blank" href="https://raw.githubusercontent.com/redhat-cop/controller_configuration/devel/docs/aap_config_as_code_public_meeting.ics"><img border="0" src="https://www.google.com/calendar/images/ext/gc_button1_en-GB.gif"></a>
+<a target="_blank" href="https://raw.githubusercontent.com/redhat-cop/controller_configuration/devel/docs/aap_config_as_code_public_meeting.ics"><img border="0" alt="Google Calendar invite" src="https://www.google.com/calendar/images/ext/gc_button1_en-GB.gif"></a>
 
 ## Code of Conduct