html/template: add an example for the Delims method
html/template: add an example for the Delims method

Change-Id: I7ba55e3f6ebbaae41188316a66a40f994c037ad9
Reviewed-on: https://go-review.googlesource.com/132240
Run-TryBot: Brad Fitzpatrick <ae9783c0b0efc69cd85ab025ddd17aa44cdc4aa5@golang.org>
TryBot-Result: Gobot Gobot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>
Reviewed-by: Brad Fitzpatrick <ae9783c0b0efc69cd85ab025ddd17aa44cdc4aa5@golang.org>

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