modify wrong word.
Merge pull request #7216 from Ivenyang/patch-1

modify wrong word.
fixed bounding box error
add gotoFrameAndPlay and setCurrentIndex interface
Merge pull request #7249 from 2youyouo2/v2_current_frame_index

add gotoFrameAndPlay and setCurrentIndex interface
Merge pull request #7245 from 2youyouo2/v2

fixed bounding box error