Update Tutorial.md fixing typo

Summary:
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## Motivation (required)

What existing problem does the pull request solve?

JavaScript was spelt incorrectly. Fixing the typo helps users understand what JSX is translated into.

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[1]: https://medium.com/martinkonicek/what-is-a-test-plan-8bfc840ec171#.y9lcuqqi9
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[3]: http://circleci.com/gh/facebook/react-native
[4]: https://github.com/facebook/react-vr/blob/master/CONTRIBUTING.md#pull-requests
Closes #217

Reviewed By: DigiTec, mikearmstrong001

Differential Revision: D5184904

fbshipit-source-id: 3d33a5c

docs/Tutorial.md

@@ -84,7 +84,7 @@ React Native ships with ES2015 support, so you can use it without worrying about
 `import`, `from`, `class`, `extends`, and the `() =>` syntax in the example above are all ES2015 features.
 [This page](https://babeljs.io/docs/learn-es2015/) has a good overview of ES2015 features.
 
-The statements such as `<Text style={{ fontSize: 0.8, ...}}>hello</Text>` above make use of JSX, which is ultimately translated into JavaScipt. For more information, see [React VR Overview](docs/react-vroverview.html).
+The statements such as `<Text style={{ fontSize: 0.8, ...}}>hello</Text>` above make use of JSX, which is translated into JavaScript. For more information, see [React VR Overview](docs/react-vroverview.html).
 
 ## AppRegistry