doc/go1.18: note short-circuit and/or in html/template
doc/go1.18: note short-circuit and/or in html/template

It was already noted in text/template; copied from there.

Change-Id: Ie749d04004af60f2333073ddf556ff7e16c81c45
Reviewed-on: https://go-review.googlesource.com/c/go/+/379794
Trust: Russ Cox <5ad239cb8a44f659eaaee0aa1ea5b94947abe557@golang.org>
Run-TryBot: Russ Cox <5ad239cb8a44f659eaaee0aa1ea5b94947abe557@golang.org>
TryBot-Result: Gopher Robot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>
Reviewed-by: Emmanuel Odeke <bd234ba4276433f0e5fc7a8fa2d18274fa711567@orijtech.com>
Reviewed-by: Ian Lance Taylor <87e9c6d529889242b7e184afb632328636553ab4@golang.org>

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