Include FastAPI link
<ul class="md-nav__list" data-md-scrollfix style="padding-top: 15px; padding-left: 10px">
<div>
- <a href=""><img src="/sponsors/fastapi.png" width=150px style=></img></a>
+ <a href="https://fastapi.tiangolo.com"><img src="/sponsors/fastapi.png" width=150px style=></img></a>
</div>
</ul>
</nav>
