Fix typos (react-navigation#2811)

Tien Pham · vonovak · commit 6a9ed3414a4b · 2017-10-23T13:44:15.000+02:00
diff --git a/docs/api/views/Transitioner.md b/docs/api/views/Transitioner.md
@@ -108,7 +108,7 @@ There are a few important properties of the `transitionProps` and `prevTransitio
 
 - `scenes: Array<NavigationScene>` - a list of all available scenes
 - `position: NavigationAnimatedValue` - the progressive index of the transitioner's navigation state
-- `progress: NavigationAnimatedValue` - the value that represents the progress of the transition when navigation state changes from one to another. Its numberic value will range from 0 to 1.
+- `progress: NavigationAnimatedValue` - the value that represents the progress of the transition when navigation state changes from one to another. Its numeric value will range from 0 to 1.
 
 For the complete list of properties of `NavigationTransitionProps`, check out its [flow definition](https://github.com/react-community/react-navigation/blob/master/src/TypeDefinition.js#L273).
 
diff --git a/src/TypeDefinition.js b/src/TypeDefinition.js
@@ -424,7 +424,7 @@ export type NavigationTransitionProps = {
   position: Animated.Value,
 
   // The value that represents the progress of the transition when navigation
-  // state changes from one to another. Its numberic value will range from 0
+  // state changes from one to another. Its numeric value will range from 0
   // to 1.
   //  progress.__getAnimatedValue() < 1 : transtion is happening.
   //  progress.__getAnimatedValue() == 1 : transtion completes.
