Update CHANGELOG.md (Azure#38368)

Author: M-Hietala

sdk/ai/azure-ai-inference/CHANGELOG.md

@@ -9,6 +9,10 @@
   * Calling `AIInferenceInstrumentor().instrument()` twice no longer results in an exception.
   * Added method `AIInferenceInstrumentor().is_content_recording_enabled()`
 
+### Bugs Fixed
+
+* Fix tracing for asynchronous streaming.
+
 ## 1.0.0b5 (2024-10-16)
 
 ### Features Added