docs(ngAnimate) - Correct keyframe to keyframeStyle

Author: Dominic Watson

src/ngAnimate/animateCss.js

@@ -186,7 +186,7 @@
  * to the element during the animation. Multiple events can be provided when spaces are used as a separator. (Note that this will not perform any DOM operation.)
  * * `easing` - The CSS easing value that will be applied to the transition or keyframe animation (or both).
  * * `transition` - The raw CSS transition style that will be used (e.g. `1s linear all`).
- * * `keyframe` - The raw CSS keyframe animation style that will be used (e.g. `1s my_animation linear`).
+ * * `keyframeStyle` - The raw CSS keyframe animation style that will be used (e.g. `1s my_animation linear`).
  * * `from` - The starting CSS styles (a key/value object) that will be applied at the start of the animation.
  * * `to` - The ending CSS styles (a key/value object) that will be applied across the animation via a CSS transition.
  * * `addClass` - A space separated list of CSS classes that will be added to the element and spread across the animation.