doc: change go1.6 http heading
doc: change go1.6 http heading

Reapply golang.org/cl/17918

Change-Id: I0df40585cdd4dae8d365ed9860a81e0cb23f21b9
Reviewed-on: https://go-review.googlesource.com/18032
Reviewed-by: Russ Cox <5ad239cb8a44f659eaaee0aa1ea5b94947abe557@golang.org>

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