Fix typo (#1209)

Author: rabikr

src/routes/solid-router/concepts/navigation.mdx

@@ -20,7 +20,7 @@ function DashboardPage() {
 	return (
 		<main>
 			<nav>
-				<A href="/">Home</a>
+				<A href="/">Home</A>
 			</nav>
 			{/* This is a relative path that, from /dashboard, links to /dashboard/users */}
 			<A href="users">Users</A>