Fix ConvTranspose2D dilation type annotaion (#72789)
Summary:
ConvTranspose2D dilation parameters allows a 2-tuple as specified in the documentation.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/72789
Reviewed By: albanD
Differential Revision: D34213968
Pulled By: jbschlosser
fbshipit-source-id: 2b7f06996f5bdaa3997b9e430c3bfbdf5d988dfc
(cherry picked from commit 4f7338d4f407356d585bd451f94f61ebe489b775)
