docs: Remove "beta" mark from message-retention-policy.md.

The retention policy has been sufficiently well tested at this point to
consider it stable.
This commit is contained in:
Mateusz Mandera 2021-03-25 20:12:50 +01:00 committed by Tim Abbott
parent a5d2cadb33
commit f18d7fa7ed

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@ -1,4 +1,4 @@
# Message retention policy (beta)
# Message retention policy
{!owner-only.md!}