spec: use consistent quoting style in prose
spec: use consistent quoting style in prose

Fixes #23389.

Change-Id: Id6e86eebe44809db12a0e14014c474bf4fbf5108
Reviewed-on: https://go-review.googlesource.com/87035
Reviewed-by: Brad Fitzpatrick <ae9783c0b0efc69cd85ab025ddd17aa44cdc4aa5@golang.org>

codestation/go,josharian/go,Cofyc/go,Cofyc/go,cloudflare/go,CAFxX/go,CAFxX/go,nawawi/go,golang/go,codestation/go,christopher-henderson/Go,cloudflare/go,akutz/go,CAFxX/go,nawawi/go,akutz/go,codestation/go,cloudflare/go,Cofyc/go,josharian/go,Cofyc/go,golang/go,codestation/go,Cofyc/go,josharian/go,CAFxX/go,josharian/go,golang/go,cloudflare/go,cloudflare/go,CAFxX/go,CAFxX/go,cloudflare/go,codestation/go,nawawi/go,nawawi/go,nawawi/go,nawawi/go,golang/go,akutz/go,cloudflare/go,golang/go,akutz/go,akutz/go,josharian/go,Cofyc/go,golang/go,codestation/go,CAFxX/go,akutz/go,cloudflare/go,codestation/go,nawawi/go,josharian/go,Cofyc/go,golang/go,Cofyc/go,josharian/go,nawawi/go,akutz/go,golang/go,CAFxX/go,josharian/go,codestation/go,akutz/go