fixed typo in shape_analysis.cpp (#18227)
Summary:
cc: VitalyFedyunin
Pull Request resolved: https://github.com/pytorch/pytorch/pull/18227
Differential Revision: D14541764
Pulled By: VitalyFedyunin
fbshipit-source-id: 9477deb1a99e6581f15a4de4d7631d747f56f3a6
