Backport of Fix metric names in Consul agent telemetry docs into release/1.15.x

[hc-github-team-consul-core]

Backport

This PR is auto-generated from #17577 to be assessed for backporting due to the inclusion of the label backport/1.15.

🚨

Warning automatic cherry-pick of commits failed. If the first commit failed,
you will see a blank no-op commit below. If at least one commit succeeded, you
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The person who merged in the original PR is:
@jjtimmons
This person should manually cherry-pick the original PR into a new backport PR,
and close this one when the manual backport PR is merged in.

merge conflict error: unable to process merge commit: "bed7863d488c1f51a21570c78afe9d4cf0ec7251", automatic backport requires rebase workflow

The below text is copied from the body of the original PR.

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Description

A seemingly random subset of counters have a . in their name which is incorrect (the metric names don't end in .)

Testing & Reproduction steps

Checked and a couple of these metrics do not, in fact, end in periods:

Links

PR Checklist

• updated test coverage
• external facing docs updated
• appropriate backport labels added
• not a security concern

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Overview of commits

• 8144eb0 - 4d3f2e0 - bed7863

[github-team-consul-core-pr-approver]

Auto approved Consul Bot automated PR