Fix keyBindingFn documentation URL

Summary: Current URL is incorrect. Updated to the correct link.

Reviewed By: mrkev

Differential Revision: D19723305

fbshipit-source-id: 562c204e0d42f1535750b12c5eac62a0e759817d

src/component/base/DraftEditor.react.js

@@ -247,7 +247,7 @@ class DraftEditor extends React.Component<DraftEditorProps, State> {
             `Supplying an \`${propName}\` prop to \`DraftEditor\` has ` +
               'been deprecated. If your handler needs access to the keyboard ' +
               'event, supply a custom `keyBindingFn` prop that falls back to ' +
-              'the default one (eg. https://is.gd/RG31RJ).',
+              'the default one (eg. https://is.gd/wHKQ3W).',
           );
         }
       });