Bugfix: Fix arc start angle type (ManimCommunity#3205)

* Fixed animation misspelling in Mobject's add_animation_override

* Corrected angle types of Arc

Author: AlexKempen

manim/mobject/geometry/arc.py

@@ -282,8 +282,8 @@ def construct(self):
     def __init__(
         self,
         radius: float = 1.0,
-        start_angle=0,
-        angle=TAU / 4,
+        start_angle: float = 0,
+        angle: float = TAU / 4,
         num_components=9,
         arc_center=ORIGIN,
         **kwargs,

manim/mobject/mobject.py

@@ -160,7 +160,7 @@ def add_animation_override(
             The animation type to be overridden
         override_func
             The function returning an animation replacing the default animation. It gets
-            passed the parameters given to the animnation constructor.
+            passed the parameters given to the animation constructor.
 
         Raises
         ------