capi: update doc.

add missing parameter description.

Change-Id: I01795768914a77b62ce47218d7f2aae5834cfa63

diff --git a/inc/rlottie_capi.h b/inc/rlottie_capi.h
index 2c8a199..d038782 100644 (file)
--- a/inc/rlottie_capi.h
+++ b/inc/rlottie_capi.h
@@ -137,6 +137,7 @@ LOT_EXPORT double lottie_animation_get_framerate(const Lottie_Animation *animati
  *         at frame = @c frame_num, the content of the animation in that frame number.
  *
  *  @param[in] animation Animation object.
+ *  @param[in] frame_num Content corresponds to the @p frame_num needs to be drawn
  *  @param[in] width requested snapshot viewport width.
  *  @param[in] height requested snapshot viewport height.
  *