chore(_official-tutorial): cleanup example (#181)

Author: MichaelDeBoey

_official-tutorial/app/entry.client.tsx

@@ -1,5 +1,4 @@
 import * as React from "react";
-import type { LinksFunction } from "@remix-run/node";
 import { redirect } from "@remix-run/node";
 import {
   Form,

_official-tutorial/app/entry.server.tsx

@@ -37,7 +37,11 @@ export default function Contact() {
   return (
     <div id="contact">
       <div>
-        <img key={contact.avatar} src={contact.avatar} />
+        <img
+          alt={`${contact.firstName} ${contact.lastName}`}
+          key={contact.avatar}
+          src={contact.avatar}
+        />
       </div>
 
       <div>