go/printer: fix typo
go/printer: fix typo

Change-Id: Idf89559c9945c5a8743539658fe92e860fcc6a92
Reviewed-on: https://go-review.googlesource.com/47362
Reviewed-by: Matt Layher <76528ff2e917253aa2211f68e4ca60b5b846dcf5@gmail.com>

vsekhar/elastic-go,josharian/go,Cofyc/go,codestation/go,nawawi/go,akutz/go,polyverse-security/go,codestation/go,golang/go,nawawi/go,vsekhar/elastic-go,CAFxX/go,polyverse-security/go,nawawi/go,cloudflare/go,nawawi/go,golang/go,codestation/go,josharian/go,codestation/go,vsekhar/elastic-go,cloudflare/go,akutz/go,polyverse-security/go,akutz/go,Cofyc/go,cloudflare/go,CAFxX/go,cloudflare/go,josharian/go,CAFxX/go,akutz/go,akutz/go,golang/go,CAFxX/go,akutz/go,CAFxX/go,vsekhar/elastic-go,josharian/go,CAFxX/go,codestation/go,golang/go,nawawi/go,Cofyc/go,akutz/go,josharian/go,golang/go,polyverse-security/go,codestation/go,polyverse-security/go,polyverse-security/go,vsekhar/elastic-go,vsekhar/elastic-go,Cofyc/go,cloudflare/go,vsekhar/elastic-go,codestation/go,nawawi/go,codestation/go,Cofyc/go,Cofyc/go,cloudflare/go,christopher-henderson/Go,Cofyc/go,nawawi/go,cloudflare/go,golang/go,polyverse-security/go,nawawi/go,CAFxX/go,golang/go,josharian/go,josharian/go,CAFxX/go,golang/go,cloudflare/go,vsekhar/elastic-go,Cofyc/go,polyverse-security/go,josharian/go,akutz/go