Metric names mismatch: *_count in document, *_count_total in actual behavior

[ordovicia]

What steps did you take and what happened:
[A clear and concise description of what the bug is.]

The document states that Gatekeeper provides gatekeeper_constraint_template_ingestion_count and other *_count metrics.
https://open-policy-agent.github.io/gatekeeper/website/docs/metrics/#metrics

But Gatekeeper actually serves gatekeeper_constraint_template_ingestion_count_total and other *_count_total metrics.

$ curl -s localhost:8888/metrics | rg "# HELP.+_count"
# HELP gatekeeper_constraint_template_ingestion_count_total Total number of constraint template ingestion actions
# HELP gatekeeper_mutation_request_count_total The number of requests that are routed to mutation webhook
# HELP gatekeeper_mutator_conflicting_count The current number of conflicting Mutator objects
# HELP gatekeeper_mutator_ingestion_count_total Total number of Mutator ingestion actions
# HELP gatekeeper_validation_request_count_total The number of requests that are routed to validation webhook

What did you expect to happen:

The documentation and actual behavior match

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]

I think modifying metric names will make a big impact on users.
So updating the documentation will be a right resolution.

Environment:

• Gatekeeper version: 3.15.1
• Kubernetes version: (use kubectl version): 1.29.3

[ritazh]

Thanks for reporting this! FYI https://github.com/open-policy-agent/gatekeeper/pull/3353/files#r1563512579