Added doc comment fixed type printout
Added doc comment fixed type printout

Added a doc comment for the lint and fixed the printout of the type so it prints T not type(T)

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