Corrected Argument to Option in merge_and_reduce layer

gstlal-inspiral/python/dags/layers/inspiral.py

@@ -2450,7 +2450,7 @@ def merge_and_reduce_layer(config, dag, trigger_cache):
 					outputs = Option("database", partial_trigger_path.replace('xml.gz', 'sqlite')),
 				)
 				sqlite_layer += Node(
-					inputs = Argument("database", partial_trigger_path.replace('xml.gz', 'sqlite')),
+					inputs = Option("database", partial_trigger_path.replace('xml.gz', 'sqlite')),
 					outputs = Option("extract", partial_trigger_path),
 				)