Merge pull request #2986 from KayO-GH/patch-1

Fixed typo

docs/Tutorial.md

@@ -290,7 +290,7 @@ export default withStyles(styles)(MyUrlField);
 
 In JSS, you define styles as a JavaScript object, using the JS variants of the CSS property names (e.g. `textDecoration` instead of `text-decoration`). To pass these styles to the component, wrap it inside a call to `withStyles(styles)`. JSS will create new class names for these styles, insert them (once) in the HTML document, and pass the new class names as a new `classes` property. Then, use these names in a `className` prop, as you would with a regular CSS class.
 
-**Tip**: There is much more to JSS that what this tutorial covers. Read the [material-ui documentation](https://material-ui.com/) to learn more about theming, vendor prefixes, responsive utilities, etc.
+**Tip**: There is much more to JSS than what this tutorial covers. Read the [material-ui documentation](https://material-ui.com/) to learn more about theming, vendor prefixes, responsive utilities, etc.
 
 
 ## Handling Relationships