Document clarification PR for second board resolution

Author: pradyunsg

peps/pep-0772.rst

@@ -471,6 +471,7 @@ authors will submit this PEP
      clarification: The Python Steering Council (PSC) is the final arbiter for technical conflicts
      of interest, and the PSF Board is the final arbiter for conflicts of interest related to
      governance for the Packaging Council.  Approved, 10-0-0.
+   - Requested language added in `PR 4872 <https://github.com/python/peps/pull/4872/files>`_.
    - Resolution link TBD; resolution provided via email at time of writing.
 
 #. for a vote on the pypa-committers mailing list, in accordance with the process outlined in