AO migration: migrate .rst files to new locations (#94211)
Summary:
Migrates the PyTorch documentation to point to the new locations
of AO code. Context: https://github.com/pytorch/pytorch/issues/81667
Process:
1. run https://gist.github.com/vkuzo/c38d4ba201604579d7d316ec4a4692e7 for automated replacement
2. manually fix the doc build errors (by removing the module declarations which are now duplicate)
Test plan: CI
Pull Request resolved: https://github.com/pytorch/pytorch/pull/94211
Approved by: https://github.com/jerryzh168
