Small grammar problem (vuejs#1539)

hecktarzuli · sdras · commit 091146bef898 · 2018-03-28T16:59:33.000-05:00
diff --git a/src/v2/api/index.md b/src/v2/api/index.md
@@ -1004,7 +1004,7 @@ type: api
 
   <p class="tip">`provide` and `inject` are primarily provided for advanced plugin / component library use cases. It is NOT recommended to use them in generic application code.</p>
 
-  This pair of options are used together to allow an ancestor component to serve as a dependency injector for its all descendants, regardless of how deep the component hierarchy is, as long as they are in the same parent chain. If you are familiar with React, this is very similar to React's context feature.
+  This pair of options are used together to allow an ancestor component to serve as a dependency injector for all its descendants, regardless of how deep the component hierarchy is, as long as they are in the same parent chain. If you are familiar with React, this is very similar to React's context feature.
 
   The `provide` option should be an object or a function that returns an object. This object contains the properties that are available for injection into its descendants. You can use ES2015 Symbols as keys in this object, but only in environments that natively support `Symbol` and `Reflect.ownKeys`.
 
