Change test file names to align with the set convention

Summary:
Changelog:
[General][Changed] Change RNTester example name

Reviewed By: lunaleaps

Differential Revision: D26129706

fbshipit-source-id: 53e906f26dd18ef8bceca2e3700e3403e3d0421a

packages/rn-tester/js/examples/TextInput/TextInputSharedExamples.js

@@ -470,7 +470,7 @@ module.exports = ([
     },
   },
   {
-    name: 'clearInput',
+    name: 'clearButton',
     title: 'Live Re-Write (no spaces allowed) and clear',
     render: function(): React.Node {
       return <RewriteInvalidCharactersAndClearExample />;