Fix typo in docs. (jestjs#7414)

docs/TutorialReact.md

@@ -204,7 +204,7 @@ React 16 triggers these warnings due to how it checks element types, and the moc
     ```js
     jest.mock('fbjs/lib/warning', () => require('fbjs/lib/emptyFunction'));
     ```
-    This shouldn't normally be your option of choice as useful warnings could be lost. However, in some cases, for example when testing react-native's components we are rendering react-native tags into the DOM and many warnings are irrelevant. Another option is to swizzling console.warn and supress specific warnings.
+    This shouldn't normally be your option of choice as useful warnings could be lost. However, in some cases, for example when testing react-native's components we are rendering react-native tags into the DOM and many warnings are irrelevant. Another option is to swizzling console.warn and suppress specific warnings.
 
 ### DOM Testing