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

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

maths/volume.py

@@ -457,7 +457,10 @@ def main():
     print(f"Spherical cap: {vol_spherical_cap(1, 2) = }")  # ~= 5.24
     print(f"Spheres intersetion: {vol_spheres_intersect(2, 2, 1) = }")  # ~= 21.21
     print(f"Spheres union: {vol_spheres_union(2, 2, 1) = }")  # ~= 45.81
-    print(f"Hollow Circular Cylinder: {vol_hollow_circular_cylinder(1, 2, 3) = }")  # ~= 28.3
+    print(
+        f"Hollow Circular Cylinder: {vol_hollow_circular_cylinder(1, 2, 3) = }"
+    )  # ~= 28.3
+
 
 if __name__ == "__main__":
     main()