Auto merge of #29966 - MatthiasKauer:master, r=steveklabnik
Auto merge of #29966 - MatthiasKauer:master, r=steveklabnik

This commit changes the location of the rust docs.
https://github.com/rust-lang/rust/commit/024aa9a345e92aa1926517c4d9b16bd83e74c10d
Clicking the contribution link on the front page therefore becomes a 'not found' error.

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