doc/go1.7.html: typo fix; replace "," at end of sentence with "."
doc/go1.7.html: typo fix; replace "," at end of sentence with "."

Signed-off-by: Steven Phillips <steve@tryingtobeawesome.com>

Change-Id: Ie7c3253a5e1cd43be8fa12bad340204cc6c5ca76
Reviewed-on: https://go-review.googlesource.com/23677
Reviewed-by: Ian Lance Taylor <87e9c6d529889242b7e184afb632328636553ab4@golang.org>

golang/go,golang/go,suncycheng/go,cloudflare/go,akutz/go,codestation/go,CAFxX/go,CAFxX/go,akutz/go,polyverse-security/go,vsekhar/elastic-go,vsekhar/elastic-go,momchil-velikov/go,goodlang/good,theif519/go,momchil-velikov/go,nawawi/go,vsekhar/elastic-go,polyverse-security/go,CAFxX/go,linux-on-ibm-z/go,derekmarcotte/go,goodlang/good,theif519/go,golang/go,cloudflare/go,josharian/go,cloudflare/go,momchil-velikov/go,cloudflare/go,josharian/go,codestation/go,momchil-velikov/go,theif519/go,momchil-velikov/go,akutz/go,linux-on-ibm-z/go,goodlang/good,derekmarcotte/go,4ad/go,nawawi/go,josharian/go,linux-on-ibm-z/go,theif519/go,theif519/go,nawawi/go,derekmarcotte/go,akutz/go,Cofyc/go,akutz/go,CAFxX/go,josharian/go,Cofyc/go,vsekhar/elastic-go,ImJasonH/go,4ad/go,golang/go,ImJasonH/go,ImJasonH/go,ImJasonH/go,ImJasonH/go,derekmarcotte/go,momchil-velikov/go,4ad/go,polyverse-security/go,goodlang/good,CAFxX/go,linux-on-ibm-z/go,momchil-velikov/go,vsekhar/elastic-go,golang/go,codestation/go,derekmarcotte/go,josharian/go,vsekhar/elastic-go,codestation/go,linux-on-ibm-z/go,ImJasonH/go,christopher-henderson/Go,akutz/go,codestation/go,4ad/go,josharian/go,suncycheng/go,codestation/go,goodlang/good,suncycheng/go,josharian/go,polyverse-security/go,josharian/go,4ad/go,suncycheng/go,ImJasonH/go,akutz/go,cloudflare/go,cloudflare/go,ImJasonH/go,derekmarcotte/go,golang/go,momchil-velikov/go,suncycheng/go,suncycheng/go,Cofyc/go,nawawi/go,goodlang/good,goodlang/good,Cofyc/go,theif519/go,4ad/go,nawawi/go,polyverse-security/go,derekmarcotte/go,Cofyc/go,polyverse-security/go,polyverse-security/go,codestation/go,vsekhar/elastic-go,vsekhar/elastic-go,codestation/go,theif519/go,CAFxX/go,cloudflare/go,nawawi/go,derekmarcotte/go,suncycheng/go,Cofyc/go,Cofyc/go,golang/go,linux-on-ibm-z/go,nawawi/go,akutz/go,nawawi/go,theif519/go,4ad/go,suncycheng/go,CAFxX/go,polyverse-security/go,4ad/go,CAFxX/go,Cofyc/go,goodlang/good,golang/go,linux-on-ibm-z/go,linux-on-ibm-z/go,cloudflare/go