Rollup merge of #29567 - Toby-S:patch-1, r=steveklabnik
Rollup merge of #29567 - Toby-S:patch-1, r=steveklabnik

Reword "Writing the logic" paragraph to prevent `unwrap` being confused for a macro (and other small changes to improve the flow of the paragraph).

cc @steveklabnik

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