net/http: fix typo in comment in main_test
net/http: fix typo in comment in main_test

Change-Id: I22d4b5a0d5c146a65d4ef77a32e23f7780ba1d95
Reviewed-on: https://go-review.googlesource.com/22684
Reviewed-by: Brad Fitzpatrick <ae9783c0b0efc69cd85ab025ddd17aa44cdc4aa5@golang.org>

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