Update __init__.py

Author: rahuldimri

instrumentation/opentelemetry-instrumentation-elasticsearch/src/opentelemetry/instrumentation/elasticsearch/__init__.py

@@ -138,7 +138,7 @@ def _instrument(self, **kwargs):
         response_hook = kwargs.get("response_hook")
         _wrap(
             elasticsearch,
-            "Transport.perform_request",
+            "AsyncTransport.perform_request",
             _wrap_perform_request(
                 tracer, self._span_name_prefix, request_hook, response_hook
             ),