Rollup merge of #41749 - frewsxcv:option-simplify-types, r=GuillaumeGomez
Rollup merge of #41749 - frewsxcv:option-simplify-types, r=GuillaumeGomez

Simplify types in `std::option` doc comment example.

None

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