Svd docfix (#62028)
Summary:
moving back the variable names to match the python variable and remove unicode exponents.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/62028
Reviewed By: saketh-are, mruberry
Differential Revision: D29848591
Pulled By: albanD
fbshipit-source-id: f86b8666cb5f86e300e214a6d59638d069018c50
