bpo-37750: Add doc of PyBuffer_FromContiguous (GH-15988) (GH-15990)

https://bugs.python.org/issue37750

Automerge-Triggered-By: @matrixise
(cherry picked from commit 5a56ce4a0e820fefcd598b94715a7ff7e199858d)

Co-authored-by: Hai Shi <shihai1992@gmail.com>
1 file changed