message: Update Animation_API.md
diff: You can control animation blueprints variables and events easily:
  ```py
  +
  +from unreal_engine.classes import SkeletalMeshComponent
  +
  # get a reference to the skeletal mesh
  -skeletal = self.uobject.get_component_by_type('SkeletalMeshComponent')
  +skeletal = self.uobject.get_component_by_type(SkeletalMeshComponent)
  # get a reference to the animation class
  animation = skeletal.get_anim_instance()
  