Update pkg/ext-proc/metrics/README.md

Author: ahg-g

pkg/ext-proc/metrics/README.md

@@ -8,7 +8,7 @@ This documentation is the current state of exposed metrics.
 
 ## Requirements
 
-NOTE: Response metrics are only supported in non-streaming mode, with the follow up [issue](https://github.com/kubernetes-sigs/gateway-api-inference-extension/issues/178) to address streaming mode.
+Response metrics are only supported in non-streaming mode, with the follow up [issue](https://github.com/kubernetes-sigs/gateway-api-inference-extension/issues/178) to address streaming mode.
 
 Currently there are two options:
 - If requests don't use response streaming, then you can enable `Buffered` mode for response in `EnvoyExtensionPolicy`, this will buffer the response body at the proxy and forward it to the endpoint picker, which allows the endpoint picker to report response metrics.