Rollup merge of #39346 - steveklabnik:jethro-mailmap, r=brson
Rollup merge of #39346 - steveklabnik:jethro-mailmap, r=brson

Fix @jethrogb's mailmap entry

cc rust-lang-nursery/thanks#51

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