Update changelog

Author: damemi

CHANGELOG.md

@@ -15,6 +15,7 @@ OpenTelemetry Go Automatic Instrumentation adheres to [Semantic Versioning](http
 ### Fixed
 
 - Change HTTP client span name to `{http.request.method}` ([#775](https://github.com/open-telemetry/opentelemetry-go-instrumentation/pull/775))
+- Update `net/http` instrumentation to comply with semantic conventions ([#790](https://github.com/open-telemetry/opentelemetry-go-instrumentation/pull/790))
 
 
 ## [v0.12.0-alpha] - 2024-04-10