Document structures in std::io::utils
Document structures in std::io::utils

These provide various special readers, so point their docs to their
constructor functions in a manner consistent with everything else.

graydon/rust,aidancully/rust,dwillmer/rust,GBGamer/rust,aidancully/rust,pshc/rust,l0kod/rust,l0kod/rust,vhbit/rust,jroesch/rust,pshc/rust,jashank/rust,zubron/rust,vhbit/rust,graydon/rust,zubron/rust,jashank/rust,vhbit/rust,zubron/rust,dwillmer/rust,jashank/rust,l0kod/rust,zubron/rust,vhbit/rust,zubron/rust,jroesch/rust,zubron/rust,graydon/rust,jroesch/rust,pshc/rust,GBGamer/rust,pshc/rust,aidancully/rust,aidancully/rust,pshc/rust,jashank/rust,graydon/rust,jashank/rust,graydon/rust,jroesch/rust,graydon/rust,GBGamer/rust,pshc/rust,vhbit/rust,jashank/rust,dwillmer/rust,dwillmer/rust,vhbit/rust,GBGamer/rust,pshc/rust,aidancully/rust,jroesch/rust,zubron/rust,l0kod/rust,dwillmer/rust,jroesch/rust,l0kod/rust,dwillmer/rust,jroesch/rust,vhbit/rust,GBGamer/rust,jashank/rust,jashank/rust,l0kod/rust,dwillmer/rust,aidancully/rust,l0kod/rust,dwillmer/rust,l0kod/rust,GBGamer/rust,pshc/rust,GBGamer/rust,zubron/rust,GBGamer/rust,jroesch/rust,vhbit/rust