fix(sdk): watsonx warning on initialization (#3469)

Author: nirga

packages/traceloop-sdk/traceloop/sdk/tracing/tracing.py

@@ -904,7 +904,7 @@ def init_vertexai_instrumentor(
 def init_watsonx_instrumentor():
     try:
         if is_package_installed("ibm-watsonx-ai") or is_package_installed(
-            "ibm_watson_machine_learning"
+            "ibm-watson-machine-learning"
         ):
             from opentelemetry.instrumentation.watsonx import WatsonxInstrumentor