Fix invalid URL and add metricsets and scope to elasticsearch-xpack.yml.disabled

[jguay]

Proposed commit message

• elasticsearch-xpack.yml.disabled contains an invalid hyperlink which is fixed
• Also adding metricsets and scope commented-out settings for convenience/completeness
• I wasn't sure to use doc label given the file is part of the metricbeat release I used enhancement

Checklist

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas - N/A
• I have made corresponding changes to the documentation / N/A
• I have made corresponding change to the default configuration files
• I have added tests that prove my fix is effective or that my feature works - N/A
• I have added an entry in CHANGELOG.next.asciidoc or CHANGELOG-developer.next.asciidoc. - No release notes change needed (added commented-out settings on a disabled template file and fixed a documentation URL)

Disruptive User Impact

No impact

Author's Checklist

• Checked metricsets are the currently supported list (versus no list previously)

How to test this PR locally

• check metricbeat compiles - there is no used file modified in this PR

[mergify]

backport-8.x has been added to help with the transition to the new branch 8.x.

[elasticmachine]

Pinging @elastic/elastic-agent-data-plane (Team:Elastic-Agent-Data-Plane)

[VihasMakwana]

Can you run make update under metricbeat and commit changes ?