Update instrumentation/opentelemetry-instrumentation-asyncio/src/open…

…telemetry/instrumentation/asyncio/utils.py

Co-authored-by: Aaron Abbott <aaronabbott@google.com>

instrumentation/opentelemetry-instrumentation-asyncio/src/opentelemetry/instrumentation/asyncio/utils.py

@@ -21,7 +21,7 @@
 )
 
 
-def separate_coro_names_by_comma(coro_names: str) -> set:
+def separate_coro_names_by_comma(coro_names: str) -> Set[str]:
     """
     Function to separate the coroutines to be traced by comma
     """