[doc] Fix documentation for tensorsolve (#53320)
Summary:
This PR fixes a typo in the explanation of `dims` for `linalg.tensorsolve`.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/53320
Reviewed By: jbschlosser
Differential Revision: D27048736
Pulled By: anjali411
fbshipit-source-id: db230b21191cc9cfb73b967cd15305fe74178c2b
