This stems from open-telemetry/opentelemetry-specification#2972 and https://github.com/open-telemetry/opentelemetry-specification/pull/3158/files

"The HTTP metrics semantic convention spec should provide clarity "what is considered a compliant implementation", e.g. "an implementation is considered compliant if it has implemented all of the metrics described by this spec"

The work required in build-tools is:

• Add a field to the metrics semconv yaml (should this also be for traces?)
• Decide where this will be rendered in markdown (most likely the metrics table makes sense) + write it into the markdown renderer