shiny/driver/windriver: add references to thread affinity explanation
shiny/driver/windriver: add references to thread affinity explanation

Change-Id: I271d16337c2315345c88425e1b21874f555496d9
Reviewed-on: https://go-review.googlesource.com/20505
Reviewed-by: Nigel Tao <58ae08b3356928ff9c67562b4719487d54fe8348@golang.org>

AkihiroSuda/golang-exp-aspectgo,golang/exp,AkihiroSuda/golang-exp-aspectgo,AkihiroSuda/golang-exp-aspectgo,golang/exp,golang/exp