Auto merge of #28858 - jryans:crate-doc-syntax, r=alexcrichton
Auto merge of #28858 - jryans:crate-doc-syntax, r=alexcrichton

Without the blank lines, the content is displayed inline, including the `rust,ignore` syntax hint.

r? @steveklabnik

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