Update GOVERNANCE.md for PyMCon_2022 planning repo (#6088)

* Update GOVERNANCE.md

* Add extra sentence

* Update governance

* Fix typo

Author: canyon289

GOVERNANCE.md

@@ -653,6 +653,12 @@ Team:
 In addition, Council members are given administrative rights to all repositories within
 the [pymc-devs](https://github.com/pymc-devs) organization.
 
+##### Communication Focused Repositories
+Some repositories on Github may be used primarily for internal knowledge store and communication, rather than content tha tis curated, published, or released _by the project_ for external users.
+
+The permissions of such repositories will be set in order to allow the same participation and access levels we use on private project communication channels like Slack.
+Therefore, similarly to slack, these repositories will be private and write permissions will be given to all recurrent contributors (that is, anyone with access to slack).
+
 #### Discourse
 Similar to the above section, Discourse permissions are also mapped to the community team
 and the two contributor roles.