Broken link in exporter/opentelemetry-exporter-prometheus README

[AndrejKiri]

Describe your environment

Docs issue.

What happened?

In the exporter/opentelemetry-exporter-prometheus README, the link OpenTelemetry Prometheus Exporter (https://opentelemetry-python.readthedocs.io/en/latest/exporter/prometheus/prometheus.html) leads to 404.

Steps to Reproduce

Open https://github.com/open-telemetry/opentelemetry-python/tree/main/exporter/opentelemetry-exporter-prometheus. In the README, click on the first link in the References section.

Expected Result

I expected to see something else than 404.

Actual Result

I saw 404.

Additional context

No response

Would you like to implement a fix?

None