[patcg.github.io] Add link to join (#13)

seanturner has just created a new issue for https://github.com/patcg/patcg.github.io:

== Add link to join ==
Add a link in the Announcements sections after joining the CG is mentioned.

Please view or discuss this issue at https://github.com/patcg/patcg.github.io/issues/13 using your GitHub account


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Received on Monday, 4 April 2022 18:07:59 UTC