fix docstring formatting

b_asic/signal_flow_graph.py

@@ -737,11 +737,12 @@ class SFG(AbstractOperation):
         return sfg_copy()
 
     def simplify_delay_element_placement(self) -> "SFG":
-        """ Simplify an SFG by removing some redundant delay elements.
-            For example two signals originating from the same starting point, each
-            connected to a delay element will combine into a single delay element.
+        """
+        Simplify an SFG by removing some redundant delay elements.
+        For example two signals originating from the same starting point, each
+        connected to a delay element will combine into a single delay element.
 
-            Returns a copy of the simplified SFG.
+        Returns a copy of the simplified SFG.
         """
 
         sfg_copy = self()