Fix typo in Image.android.js & Image.ios.js

Summary:
Fixing a typo.

N/A

[IOS] [MINOR] [Image] - Fixed a typo in an error message
[ANDROID] [MINOR] [Image] - Fixed a typo in an error message
Closes #16777

Differential Revision: D6295564

Pulled By: shergin

fbshipit-source-id: eb6274701b6406f26b9eda1c35632cb2ce0392d7

Author: solon

Libraries/Image/Image.android.js

@@ -274,7 +274,7 @@ var Image = createReactClass({
     }
 
     if (this.props.children) {
-      throw new Error('The <Image> component cannot contain children. If you want to render content on top of the image, consider using aboslute positioning.');
+      throw new Error('The <Image> component cannot contain children. If you want to render content on top of the image, consider using absolute positioning.');
     }
 
     if (source && (source.uri || Array.isArray(source))) {

Libraries/Image/Image.ios.js

@@ -374,7 +374,7 @@ const Image = createReactClass({
     }
 
     if (this.props.children) {
-      throw new Error('The <Image> component cannot contain children. If you want to render content on top of the image, consider using aboslute positioning.');
+      throw new Error('The <Image> component cannot contain children. If you want to render content on top of the image, consider using absolute positioning.');
     }
 
     return (