DOC: Documentation for MultiIndex.get_locs() is missing in v0.25 docs

[Dr-Irv]

Problem description

The documentation for MultiIndex.get_locs() is missing in v0.25 docs (at least since v0.23?)

It is referred to here:
https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.MultiIndex.get_loc.html

And it existed in v0.22:
https://pandas.pydata.org/pandas-docs/version/0.22/generated/pandas.MultiIndex.get_locs.html

Mentioned in #29967

[TomAugspurger]

I think adding get_locs to the list of methods in

pandas/pandas/core/indexes/multi.py

Line 183 in 04c0870

Methods

may fix this.