Rollup merge of #43868 - lukaramu:issue-43866, r=steveklabnik
Rollup merge of #43868 - lukaramu:issue-43866, r=steveklabnik

Add missing newline in Deref docs to fix rendering

Fixes #43866.

(Verified locally.)

r? @steveklabnik

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