Update sentry_sdk/integrations/otlp.py

Co-authored-by: Ivana Kellyer <ivana.kellyer@sentry.io>

Author: sl0thentr0py

sentry_sdk/integrations/otlp.py

@@ -119,7 +119,7 @@ def inject(self, carrier, context=None, setter=default_setter):
         if baggage is not None and isinstance(baggage, Baggage):
             baggage_data = baggage.serialize()
             if baggage_data:
-                setter.set(carrier, BAGGAGE_HEADER_NAME, baggage.serialize())
+                setter.set(carrier, BAGGAGE_HEADER_NAME, baggage_data)
 
 
 def _to_traceparent(span_context):