Rollup merge of #34659 - GuillaumeGomez:path_file_name, r=steveklabnik
Rollup merge of #34659 - GuillaumeGomez:path_file_name, r=steveklabnik

Fix `std::path::Path::file_name()` doc

Fixes #34632

r? @steveklabnik

aidancully/rust,aidancully/rust,GBGamer/rust,GBGamer/rust,GBGamer/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust,GBGamer/rust,graydon/rust,GBGamer/rust,GBGamer/rust,graydon/rust,aidancully/rust,aidancully/rust,GBGamer/rust,aidancully/rust,GBGamer/rust