Metric help text validation causes issues with multiple versions

[johnharris85]

There was a change back in August 2024 that added a (seemingly innocent) period to some help text.

Unfortunately with the strict help text match checking that happens in the client that makes interoperability between different golang applications utilizing different versions of the client problematic (as the validation fails).

I'm not close enough to know why validation of the help text is necessary, but are you open to a PR to either remove it or have an option to disable strict checking?