Rollup merge of #48064 - Manishearth:intra-doc-bail, r=QuietMisdreavus
Rollup merge of #48064 - Manishearth:intra-doc-bail, r=QuietMisdreavus

intra-doc-links: bail early for linky things

r? @QuietMisdreavus

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