mathlib3

c8fd7e33 - chore(measure_theory/covering/besicovitch): Weaker import (#11763)

chore(measure_theory/covering/besicovitch): Weaker import (#11763) We relax the `set_theory.cardinal_ordinal` import to the weaker `set_theory.ordinal_arithmetic` import. We also fix some trivial spacing issues in the docs.