Rename 'scope' to 'loop_scope' in error message

Author: tusharsadhwani

pytest_asyncio/plugin.py

@@ -1004,7 +1004,7 @@ def _get_marked_loop_scope(asyncio_marker: Mark) -> _ScopeName:
     if asyncio_marker.args or (
         asyncio_marker.kwargs and set(asyncio_marker.kwargs) - {"loop_scope", "scope"}
     ):
-        raise ValueError("mark.asyncio accepts only a keyword argument 'scope'.")
+        raise ValueError("mark.asyncio accepts only a keyword argument 'loop_scope'.")
     if "scope" in asyncio_marker.kwargs:
         if "loop_scope" in asyncio_marker.kwargs:
             raise pytest.UsageError(_DUPLICATE_LOOP_SCOPE_DEFINITION_ERROR)