gh-85757: Change wording from nested to inner (GH-91811)

#85757

https://docs.python.org/3/tutorial/datastructures.html#nested-list-comprehensions

I do think this is clearer, but I wonder if 'nested' should be kept though to get the terminology out there more often. So perhaps it could be something like 'inner (nested) listcomp' or 'nested (inner) listcomp' despite sounding a bit redundant

Automerge-Triggered-By: GH:rhettinger