fix typo as there is no file called YGJNI.cpp (#990)
fix typo as there is no file called YGJNI.cpp (#990)

Summary:
fix typo in `YogaJNIBase.java` as there is no such file called `YGJNI.cpp`
Pull Request resolved: https://github.com/facebook/yoga/pull/990

Reviewed By: pasqualeanatriello

Differential Revision: D20735102

Pulled By: SidharthGuglani

fbshipit-source-id: 3f9f4d78ba390feae3451330f997a221ab4ec70e

facebook/css-layout,facebook/css-layout,facebook/yoga,facebook/yoga,facebook/css-layout,facebook/yoga,facebook/yoga,facebook/css-layout,facebook/yoga,facebook/css-layout,facebook/yoga,facebook/yoga,facebook/css-layout,facebook/yoga,facebook/css-layout,facebook/css-layout,facebook/yoga,facebook/yoga,facebook/css-layout