Fix sidebar for google_tags_location_tag_binding

[rileykarson]

The --- omitted in #6716 was load-bearing, this currently shows up under "Resources". Also remove page_title as I think that only matters for Guides entries.

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[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes:

Diff report

Your PR generated some diffs in downstreams - here they are.

Terraform GA: Diff ( 1 file changed, 1 insertion(+), 1 deletion(-))
Terraform Beta: Diff ( 1 file changed, 1 insertion(+), 1 deletion(-))
TF Validator: Diff ( 2 files changed, 3 insertions(+), 3 deletions(-))

[SarahFrench]

LGTM

Also, that's right, page_title is only for Guides. It isn't doing anything here, but I think it's good to remove it to reduce any mental overhead for developers.