Update the MyPy requirement sync comment. (#11266)
Update the MyPy requirement sync comment. (#11266)

This updates the suggested command to get the configured mypy version
for @rules.

benjyw/pants,pantsbuild/pants,pantsbuild/pants,pantsbuild/pants,pantsbuild/pants,benjyw/pants,benjyw/pants,benjyw/pants,jsirois/pants,jsirois/pants,pantsbuild/pants,benjyw/pants,jsirois/pants,benjyw/pants,pantsbuild/pants,benjyw/pants,pantsbuild/pants