[FX][docs][EZ] Fix link to fuser example (#59670)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/59670
Test Plan: Imported from OSS
Reviewed By: jansel
Differential Revision: D28975704
Pulled By: jamesr66a
fbshipit-source-id: 2fb759224b5b1ecc62c0ab26563d2a35ed422794
