Rollup merge of #41528 - steveklabnik:gh33269, r=frewsxcv
Rollup merge of #41528 - steveklabnik:gh33269, r=frewsxcv

Clarify "side effect" in peek's docs

Fixes #33269

/cc @tshepang

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