doc: update 1.6.txt for fmt.Scanf change
doc: update 1.6.txt for fmt.Scanf change

Change-Id: Icdce5cdb8676c3bcb73bd943b406000252509521
Reviewed-on: https://go-review.googlesource.com/17174
Reviewed-by: Rob Pike <4dc7c9ec434ed06502767136789763ec11d2c4b7@golang.org>

mwhudson/go,Jordanzuo/go,ImJasonH/go,odeke-em/go,odeke-em/go,golang/go,cloudflare/go,akutz/go,derekmarcotte/go,odeke-em/go,Endika/go,akutz/go,Endika/go,codestation/go,codestation/go,vsekhar/elastic-go,derekmarcotte/go,codestation/go,josharian/go,mwhudson/go,kim-racktop/go,4ad/go,derekmarcotte/go,sndnvaps/go,josharian/go,CAFxX/go,4ad/go,josharian/go,Cofyc/go,akutz/go,cloudflare/go,cloudflare/go,odeke-em/go,goodlang/good,Samurais/go,theif519/go,fjballest/golang,vanloswang/go,vsekhar/elastic-go,momchil-velikov/go,mwhudson/go,4ad/go,Cofyc/go,Cofyc/go,binarycrusader/go,miolini/go,linux-on-ibm-z/go,miolini/go,akutz/go,miolini/go,vanloswang/go,goodlang/good,linux-on-ibm-z/go,suncycheng/go,deft-code/go,suncycheng/go,roth1002/go,cloudflare/go,nawawi/go,derekmarcotte/go,Jordanzuo/go,golang/go,momchil-velikov/go,polyverse-security/go,CAFxX/go,theif519/go,momchil-velikov/go,fjballest/golang,ganboing/go-esx,miolini/go,goodlang/good,vsekhar/elastic-go,cyberroadie/go,Endika/go,vanloswang/go,kim-racktop/go,mwhudson/go,fjballest/golang,kim-racktop/go,4ad/go,deft-code/go,cyberroadie/go,polyverse-security/go,cyberroadie/go,nawawi/go,Cofyc/go,binarycrusader/go,cloudflare/go,vanloswang/go,roth1002/go,sndnvaps/go,Samurais/go,golang/go,vsekhar/elastic-go,ImJasonH/go,odeke-em/go,deft-code/go,polyverse-security/go,goodlang/good,Endika/go,deft-code/go,vsekhar/elastic-go,suncycheng/go,roth1002/go,Samurais/go,ganboing/go-esx,theif519/go,deft-code/go,momchil-velikov/go,sndnvaps/go,miolini/go,miolini/go,ImJasonH/go,cloudflare/go,codestation/go,fjballest/golang,sndnvaps/go,theif519/go,codestation/go,odeke-em/go,sndnvaps/go,codestation/go,fjballest/golang,Cofyc/go,golang/go,linux-on-ibm-z/go,Endika/go,ImJasonH/go,nawawi/go,cyberroadie/go,codestation/go,polyverse-security/go,fjballest/golang,akutz/go,derekmarcotte/go,suncycheng/go,Samurais/go,deft-code/go,CAFxX/go,roth1002/go,ganboing/go-esx,josharian/go,golang/go,deft-code/go,theif519/go,linux-on-ibm-z/go,polyverse-security/go,Cofyc/go,derekmarcotte/go,ganboing/go-esx,cloudflare/go,momchil-velikov/go,4ad/go,odeke-em/go,Jordanzuo/go,momchil-velikov/go,linux-on-ibm-z/go,CAFxX/go,nawawi/go,kim-racktop/go,linux-on-ibm-z/go,odeke-em/go,derekmarcotte/go,kim-racktop/go,cloudflare/go,nawawi/go,suncycheng/go,CAFxX/go,cyberroadie/go,ImJasonH/go,Jordanzuo/go,josharian/go,roth1002/go,roth1002/go,suncycheng/go,theif519/go,Cofyc/go,nawawi/go,derekmarcotte/go,binarycrusader/go,sndnvaps/go,Cofyc/go,Samurais/go,akutz/go,ImJasonH/go,Endika/go,golang/go,goodlang/good,goodlang/good,kim-racktop/go,ganboing/go-esx,binarycrusader/go,roth1002/go,ganboing/go-esx,roth1002/go,linux-on-ibm-z/go,vsekhar/elastic-go,nawawi/go,vanloswang/go,Jordanzuo/go,4ad/go,vsekhar/elastic-go,mwhudson/go,goodlang/good,4ad/go,Samurais/go,binarycrusader/go,golang/go,Jordanzuo/go,josharian/go,sndnvaps/go,Endika/go,miolini/go,CAFxX/go,josharian/go,fjballest/golang,suncycheng/go,momchil-velikov/go,vanloswang/go,ImJasonH/go,miolini/go,binarycrusader/go,CAFxX/go,binarycrusader/go,golang/go,polyverse-security/go,kim-racktop/go,nawawi/go,goodlang/good,4ad/go,cyberroadie/go,cyberroadie/go,Endika/go,CAFxX/go,suncycheng/go,binarycrusader/go,deft-code/go,polyverse-security/go,Samurais/go,ganboing/go-esx,mwhudson/go,Jordanzuo/go,josharian/go,Jordanzuo/go,mwhudson/go,theif519/go,ganboing/go-esx,akutz/go,mwhudson/go,fjballest/golang,vsekhar/elastic-go,linux-on-ibm-z/go,christopher-henderson/Go,theif519/go,vanloswang/go,sndnvaps/go,codestation/go,polyverse-security/go,kim-racktop/go,momchil-velikov/go,akutz/go,Samurais/go,ImJasonH/go,cyberroadie/go,vanloswang/go