api: fix typo in README
api: fix typo in README

Fixes #13690.

Change-Id: I3b9b993a2e7ecf07bab7d1935d4c83a86bc6ba3a
Reviewed-on: https://go-review.googlesource.com/18054
Reviewed-by: Alex Brainman <54ba58c8441b5eff861de6b4e5ee46baf086b142@gmail.com>

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