Use intra-doc links for compare_exchange and compare_exchange_weak
Use intra-doc links for compare_exchange and compare_exchange_weak

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