Update docs/source/examples/3d.rst

Co-authored-by: Benjamin Hackl <[email protected]>

Author: kolibril13

docs/source/examples/3d.rst

@@ -8,17 +8,14 @@
     class Example3DNo1(ThreeDScene):
         def construct(self):
             axes = ThreeDAxes()
-
             sphere = ParametricSurface(
                 lambda u, v: np.array([
                     1.5 * np.cos(u) * np.cos(v),
                     1.5 * np.cos(u) * np.sin(v),
                     1.5 * np.sin(u)
-                ]), v_min=0, v_max=TAU, u_min=-PI / 2, u_max=PI / 2, checkerboard_colors=[RED_D, RED_E],
-                resolution=(15, 32))
-
+                ]), v_min=0, v_max=TAU, u_min=-PI / 2, u_max=PI / 2,
+                checkerboard_colors=[RED_D, RED_E], resolution=(15, 32)
+            )
             self.set_camera_orientation(phi=75 * DEGREES, theta=30 * DEGREES)
-
             self.add(axes, sphere)
 
-