website: add Zhenghao success story

website/src/data/successStories.js

@@ -23,6 +23,27 @@ export default [
       </>
     ),
   },
+  {
+    name: 'Zhenghao He',
+    title: 'Senior Software Engineer, Instacart',
+    thumbnail: 'https://github.com/zhenghaohe.png',
+    quote: (
+      <>
+        There aren't a lot of high quality front end interview prep materials
+        online. That's why the Front End Interview Handbook is my go-to prep
+        resource. With the help of the interview handbook, I was able to easily
+        identify my weak points and work on them. As a result, I managed to get
+        offers from Meta, Amazon, Twitch, Microsoft, Coinbase, etc.
+        <br />
+        <br />
+        I've learnt a few things and blogged about them on{' '}
+        <a href="https://zhenghao.io" rel="noopener">
+          https://zhenghao.io
+        </a>
+        , check them out if you're interested!
+      </>
+    ),
+  },
   {
     name: 'Kai Li',
     title: 'Software Engineer, Quora',