zenno: mention doc/lanecalc as appropriate

Fixes #14.

zenno/src/routes/race/mspeed/+page.svelte

@@ -16,6 +16,7 @@
 		Stat,
 	} from '$lib/race';
 	import StatChart from '$lib/StatChart.svelte';
+	import { resolve } from '$app/paths';
 	import SpeedDur from './SpeedDur.svelte';
 
 	let rawPower = $state(1200);
@@ -212,7 +213,7 @@
 						href="https://lanecalc.hf-uma.net/"
 						target="_blank"
 						rel="noopener noreferrer">危険回避シミュ</a
-					>.
+					>, or <a href={resolve('/doc/lanecalc')}>Gaikokujin's Guide to Lanecalc</a> for English instructions on how to use it.
 				</li>
 			</ul>
 		</li>