Update About.html to include other apps using Yalies

app/templates/about.html

@@ -3,6 +3,9 @@
 {% block content %}
 <h1>About</h1>
 <p>Yalies is a website that provides data on the Yale student body. It combines data from <a href="https://students.yale.edu/facebook">Yale Face Book</a> and <a href="https://directory.yale.edu">Yale Directory</a>, with enhanced design, user experience, and security. It uses only data that Yale makes public. To learn how to remove your data from Yale's publicly published data set, see <a href="/hide_me">here</a>.</p>
+<h3>API</h3>
+<p>Yalies also provides an <a href="/apidocs">API</a> for student developers!</p>
+<p>The API powers numerous student projects and university services, including <a href="https://coursetable.com">CourseTable</a>, <a href="https://yalemenus.com">Yale Menus</a>, <a href="https://rdb.yale.edu">Yale Research Database (RDB)</a>, <a href="https://yaledailynews.com/blog/2020/12/03/40-2-percent-of-returning-student-athletes-take-leaves-of-absence-this-fall">Yale Daily News</a>, <a href="https://yalies.me">Yalies.me</a>, <a href="https://mailyale.com">MailYale</a>, <a href="https://comethru.io">Comethru</a>, <a href="https://ypost.app">YPost</a>, <a href="https://github.com/ErikBoesen/yale">yale CLI</a>, <a href="https://yaledailynews.com/blog/2021/02/11/ship-lets-yalies-play-matchmaker-with-peers">Ship</a>, <a href="https://www.internships.yesatyale.org/">YES Internships</a>, </a>students in S&DS 315 and CPSC 490, and more.</p>
 <h3 name="source_code">Source Code</h3>
 <p>You may access the source code of this website <a href="https://github.com/Yalies/api">on GitHub</a>.</p>
 <h3 name="author">Author</h3>