Use parentheses in PR link
Fixes
@@ -16,7 +16,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
- Populate `auto.version` in Resource if using auto-instrumentation
([#2243](https://github.com/open-telemetry/opentelemetry-python/pull/2243))
- Return proxy instruments from ProxyMeter
- [[#2169](https://github.com/open-telemetry/opentelemetry-python/pull/2169)]
+ ([#2169](https://github.com/open-telemetry/opentelemetry-python/pull/2169))
- Make Measurement a concrete class
([#2153](https://github.com/open-telemetry/opentelemetry-python/pull/2153))
- Add metrics API
