DOC Adds code comment to clarify nn.Linear.reset_parameters (#58487)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/57109
Adds comment to clarify `a=sqrt(5)` in `nn.Linear.reset_parameters`.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/58487
Reviewed By: ailzhang
Differential Revision: D28548391
Pulled By: jbschlosser
fbshipit-source-id: 2d5910b2576a04f19edbd8b8515cdb55fc249ce5
