zenno: link up doc/race

Fixes #16.

zenno/src/routes/+page.svelte

@@ -43,6 +43,14 @@
 		<a href="https://lanecalc.hf-uma.net/" target="_blank" rel="noopener noreferrer">危険回避シミュ</a>, or Lanecalc, for precise
 		lane combo simulation.
 	</li>
+	<li>
+		<a href={resolve('/doc/race')}>Race Mechanics Charts</a> &mdash; Interactive adaptation of
+		<a
+			href="https://docs.google.com/document/d/15VzW9W2tXBBTibBRbZ8IVpW6HaMX8H0RP03kq6Az7Xg/edit"
+			target="_blank"
+			rel="noopener noreferrer">KuromiAK's race mechanics documentation</a
+		> for easier visualization of how mechanics scale.
+	</li>
 </ul>
 
 <h2 class="my-4 text-4xl">About</h2>