add info about ClangIR Upstreaming Coordination Meeting

Author: bcardosolopes

llvm/docs/GettingInvolved.rst

@@ -214,13 +214,14 @@ what to add to your calendar invite.
        `gcal <https://calendar.google.com/calendar/embed?src=c_fe5774fa2769c5085d6b87e8fac272e8940e7d0089bc0e0a58dc3ead7978504b%40group.calendar.google.com&ctz=Asia%2FTokyo>`__
      - `Minutes/docs <https://discourse.llvm.org/t/llvm-qualification-wg-sync-ups-meeting-minutes/87148>`__
    * - MLIR C/C++ Frontend Working Group
-     - 1st Monday of the month (usually)
+     - Monthly, usually 1st Monday of the month
      - `ics <https://calendar.google.com/calendar/ical/jvceakm3kbpku3f4jrsv1lkigo%40group.calendar.google.com/public/basic.ics>`__
        `gcal <https://calendar.google.com/calendar/embed?src=jvceakm3kbpku3f4jrsv1lkigo%40group.calendar.google.com&ctz=America%2FLos_Angeles>`__
      - `Minutes/docs <https://docs.google.com/document/d/1-flHK3TjQUrkSO2Fdt4webZ2zCyeXxpTLMiRQbMW7hE>`__
    * - ClangIR Upstreaming Coordination Meeting
      - Every 2 weeks on Mondays
-     -
+     - `ics <https://calendar.google.com/calendar/ical/c_673c6cd64474c0aff173bf8fa609559f93d654e0984d9d91d71abd32d28c0486%40group.calendar.google.com/public/basic.ics>`
+       `gcal <https://calendar.google.com/calendar/embed?src=c_673c6cd64474c0aff173bf8fa609559f93d654e0984d9d91d71abd32d28c0486%40group.calendar.google.com&ctz=America%2FLos_Angeles>`
      -