Docs/mm/damon/maintainer-profile: document DAMON community meetups

DAMON bi-weekly community meetup series has continued since 2022-08-15 for
community members who prefer synchronous chat over asynchronous mails. 
Recently I got some feedbacks about the series from a few people.  They
told me the series is helpful for understanding of the project and
particiapting to the development, but it could be further better in terms
of the visibility.  Based on that, I started sending meeting reminder for
every occurrence.  For people who don't subscribe the mailing list,
however, adding an announcement on the official document could be helpful.
Document the series on DAMON maintainer's profile for the purpose.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: SeongJae Park <[email protected]>
Cc: Jonathan Corbet <[email protected]>
Cc: Randy Dunlap <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

Documentation/mm/damon/maintainer-profile.rst

@@ -69,6 +69,24 @@ In other words, ``hkml`` [8]_ is a mailing tool for DAMON community, which
 DAMON maintainer is committed to support.  Please feel free to try and report
 issues or feature requests for the tool to the maintainer.
 
+Community meetup
+----------------
+
+DAMON community is maintaining two bi-weekly meetup series for community
+members who prefer synchronous conversations over mails.
+
+The first one is for any discussion between every community member.  No
+reservation is needed.
+
+The seconds one is for discussions on specific topics between restricted
+members including the maintainer.  The maintainer shares the available time
+slots, and attendees should reserve one of those at least 24 hours before the
+time slot, by reaching out to the maintainer.
+
+Schedules and available reservation time slots are available at the Google doc
+[9]_ .  DAMON maintainer will also provide periodic reminder to the mailing
+list ([email protected]).
+
 
 .. [1] https://git.kernel.org/akpm/mm/h/mm-unstable
 .. [2] https://git.kernel.org/sj/h/damon/next
@@ -78,3 +96,4 @@ issues or feature requests for the tool to the maintainer.
 .. [6] https://github.com/awslabs/damon-tests/tree/master/corr
 .. [7] https://github.com/awslabs/damon-tests/tree/master/perf
 .. [8] https://github.com/damonitor/hackermail
+.. [9] https://docs.google.com/document/d/1v43Kcj3ly4CYqmAkMaZzLiM2GEnWfgdGbZAH3mi2vpM/edit?usp=sharing