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

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

Author: pre-commit-ci[bot]

manim/mobject/opengl/opengl_vectorized_mobject.py

@@ -285,7 +285,7 @@ def set_stroke(
             for mob in self.get_family(recurse):
                 if not isinstance(width, np.ndarray):
                     mob.stroke_width = np.array([[width] for width in tuplify(width)])
-                else: 
+                else:
                     mob.stroke_width = width
 
         if background is not None: