cmd/internal/obj: fix typo in docs
cmd/internal/obj: fix typo in docs

Change-Id: I5a3d26a4cc59b327d46ca24bcb01ef594758c230
Reviewed-on: https://go-review.googlesource.com/c/go/+/296531
Trust: Josh Bleecher Snyder <cdc248cc4d32e4fbfe04e45228163bcecd48a0b9@gmail.com>
Run-TryBot: Josh Bleecher Snyder <cdc248cc4d32e4fbfe04e45228163bcecd48a0b9@gmail.com>
Reviewed-by: Ian Lance Taylor <87e9c6d529889242b7e184afb632328636553ab4@golang.org>

cloudflare/go,cloudflare/go,CAFxX/go,cloudflare/go,nawawi/go,CAFxX/go,golang/go,nawawi/go,golang/go,CAFxX/go,cloudflare/go,CAFxX/go,CAFxX/go,golang/go,golang/go,CAFxX/go,nawawi/go,golang/go,nawawi/go,cloudflare/go,nawawi/go,golang/go,cloudflare/go,CAFxX/go,golang/go,cloudflare/go,nawawi/go,cloudflare/go,nawawi/go,nawawi/go,golang/go,CAFxX/go