Update manim/utils/bezier.py

Co-authored-by: Francisco Manríquez Novoa <[email protected]>

Author: henrikmidtiby

manim/utils/bezier.py

@@ -1018,9 +1018,7 @@ def interpolate(start: float, end: float, alpha: ColVector) -> ColVector: ...
 
 
 @overload
-def interpolate(
-    start: InternalPoint3D, end: InternalPoint3D, alpha: float
-) -> Point3D: ...
+def interpolate(start: Point3D, end: Point3D, alpha: float) -> Point3D: ...
 
 
 @overload