[Feature]: Document go.schedule.duration metric emitted by NewProducer in package documentation

[pellared]

Component

Instrumentation: runtime

Problem Statement

https://pkg.go.dev/go.opentelemetry.io/contrib/instrumentation/runtime does not document go.schedule.duration emitted via NewProducer

Proposed Solution

Document in https://pkg.go.dev/go.opentelemetry.io/contrib/instrumentation/runtime metrics emitted via both Start and NewProducer. Maybe it would be better to document those on function docs level instead of package level so that the reader is aware what metrics are produced by which functionality.

Alternatives

No response

Prior Art

No response

Additional Context

No response

[tushar1977]

Hi, I’d love to work on this issue

[pellared]

@tushar1977 , I assigned you