[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

manim/mobject/geometry/arc.py

@@ -232,11 +232,11 @@ def has_start_tip(self) -> bool:
     # Getters
 
     def pop_tips(self) -> VGroup:
-        """Removes the tips of the arrow, 
+        """Removes the tips of the arrow,
         if there are no tips to return, does nothing
         """
         if not self.has_tip() and not self.has_start_tip():
-            return self.get_group_class()() 
+            return self.get_group_class()()
         start, end = self.get_start_and_end()
         result = self.get_group_class()()
         if self.has_tip():