enzyme and react: update descriptions

enzyme.md

@@ -5,6 +5,8 @@ layout: 2017/sheet
 updated: 2017-10-12
 tags: [Featured]
 weight: -1
+description: |
+  shallow() · mount() · wrap.setProps() · wrap.find().simulate('click') · wrap.contains(<div/>) ·
 intro: |
   [Enzyme](http://airbnb.io/enzyme) lets you write unit tests for React components. This guide covers Enzyme 3.x.
 ---

react.md

@@ -7,7 +7,7 @@ tags: [Featured]
 updated: 2017-10-10
 weight: -10
 description: |
-  React.Component, render(), componentDidMount(), props, state, dangerouslySetInnerHTML...
+  React.Component · render() · componentDidMount() · props/state · dangerouslySetInnerHTML ·
 intro: |
   [React](https://reactjs.org/) is a JavaScript library for building user interfaces. This guide targets React v15 to v16.
 ---