fix typos in docs

Author: Yvonne Yip

core-animation.html

@@ -105,7 +105,7 @@
 
           /**
            * A custom animation function. Either provide this or `keyframes`. The signature
-           * of the callback is EffectsCallback(timeFraction, target, animation)
+           * of the callback is `EffectsCallback(timeFraction, target, animation)`
            *
            * @property customEffect
            * @type Function(number, Object, Object)
@@ -165,9 +165,7 @@
            * counterparts.
            *
            * @property easing
-           * @type "linear"|"ease"|"ease-in"|"ease-out"|"ease-in-out"|
-           *       "cubic-bezier(<number>, <number>, <number>, <number>)"|
-           *       "step-start"|"step-middle"|"step-end"
+           * @type string
            * @default "linear"
            */
           easing: {value: 'linear', reflect: true},
@@ -188,7 +186,7 @@
            *
            * @property endDelay
            * @type number
-           * #defualt 0
+           * @default 0
            */
           endDelay: {value: 0, reflect: true},