escaping=allow-utf-8 or escaping=allow-utf8 #2747
Description
There appears to be some contradictions in the docs regarding the correct form of utf8 to use with escaping= in the Accept header
Based on what works functionally I believe allow-utf-8 to be the correct option
The content negotiation page at https://prometheus.io/docs/instrumenting/content_negotiation/ uses allow-utf8 exclusively. The value appears in the list of valid values, in the 2 instances in the default Accept header value, and the 2 instances in the default protobuf Accept header value
Edit: Preemptively added a PR #2748