doc/go1.17: fix a typo introduced in CL 335135
doc/go1.17: fix a typo introduced in CL 335135

Change-Id: I62388bcb6d6f910ffa95d3db856ea29838573256
Reviewed-on: https://go-review.googlesource.com/c/go/+/340590
Trust: Bryan C. Mills <1c8aad60184261ccede67f5c63a0d2a3bf3c9ff4@google.com>
Run-TryBot: Bryan C. Mills <1c8aad60184261ccede67f5c63a0d2a3bf3c9ff4@google.com>
Reviewed-by: Rob Pike <4dc7c9ec434ed06502767136789763ec11d2c4b7@golang.org>

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