doc/go_faq: fix grammar
doc/go_faq: fix grammar

Change-Id: Idbd6c97d754e3565aeade4d9e8011a76e8da19c2
GitHub-Last-Rev: 22e917e5ca429d76506346841e5b3c93c2a5f3fb
GitHub-Pull-Request: golang/go#31439
Reviewed-on: https://go-review.googlesource.com/c/go/+/171885
Reviewed-by: Brad Fitzpatrick <ae9783c0b0efc69cd85ab025ddd17aa44cdc4aa5@golang.org>

nawawi/go,CAFxX/go,akutz/go,golang/go,CAFxX/go,golang/go,cloudflare/go,nawawi/go,josharian/go,CAFxX/go,josharian/go,golang/go,akutz/go,akutz/go,CAFxX/go,josharian/go,akutz/go,cloudflare/go,CAFxX/go,CAFxX/go,josharian/go,CAFxX/go,cloudflare/go,cloudflare/go,cloudflare/go,nawawi/go,golang/go,golang/go,akutz/go,nawawi/go,nawawi/go,cloudflare/go,CAFxX/go,golang/go,josharian/go,akutz/go,cloudflare/go,akutz/go,nawawi/go,akutz/go,nawawi/go,golang/go,cloudflare/go,josharian/go,josharian/go,nawawi/go,josharian/go,golang/go