Fix #11015 with a nice note.
Fix #11015 with a nice note.

Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>

Test Plan: doc only

Reviewers: bgamari, austin

Subscribers: thomie

Differential Revision: https://phabricator.haskell.org/D1776

GHC Trac Issues: #11015

sgillespie/ghc,ezyang/ghc,gridaphobe/ghc,sdiehl/ghc,vikraman/ghc,gridaphobe/ghc,sgillespie/ghc,olsner/ghc,ezyang/ghc,ezyang/ghc,tjakway/ghcjvm,shlevy/ghc,mettekou/ghc,sdiehl/ghc,oldmanmike/ghc,gridaphobe/ghc,olsner/ghc,ezyang/ghc,nushio3/ghc,vTurbine/ghc,sgillespie/ghc,olsner/ghc,sdiehl/ghc,gridaphobe/ghc,snoyberg/ghc,vTurbine/ghc,gridaphobe/ghc,mcschroeder/ghc,mettekou/ghc,sdiehl/ghc,snoyberg/ghc,tjakway/ghcjvm,snoyberg/ghc,vikraman/ghc,vikraman/ghc,snoyberg/ghc,oldmanmike/ghc,mcschroeder/ghc,tjakway/ghcjvm,gridaphobe/ghc,sgillespie/ghc,vTurbine/ghc,tjakway/ghcjvm,sdiehl/ghc,shlevy/ghc,olsner/ghc,mcschroeder/ghc,mettekou/ghc,mettekou/ghc,mcschroeder/ghc,oldmanmike/ghc,ezyang/ghc,sgillespie/ghc,ezyang/ghc,mettekou/ghc,gridaphobe/ghc,oldmanmike/ghc,olsner/ghc,tjakway/ghcjvm,vTurbine/ghc,sgillespie/ghc,nushio3/ghc,vikraman/ghc,mettekou/ghc,sdiehl/ghc,olsner/ghc,tjakway/ghcjvm,vikraman/ghc,oldmanmike/ghc,vTurbine/ghc,shlevy/ghc,mcschroeder/ghc,shlevy/ghc,vTurbine/ghc,vikraman/ghc,oldmanmike/ghc,oldmanmike/ghc,snoyberg/ghc,vikraman/ghc,shlevy/ghc,sdiehl/ghc,shlevy/ghc,ezyang/ghc,snoyberg/ghc,nushio3/ghc,vTurbine/ghc,nushio3/ghc,mettekou/ghc,mcschroeder/ghc,tjakway/ghcjvm,mcschroeder/ghc,shlevy/ghc,sgillespie/ghc,olsner/ghc,nushio3/ghc,nushio3/ghc,nushio3/ghc,snoyberg/ghc