Updated back on tutorials

src/lib/layouts/DocsTutorial.svelte

@@ -5,6 +5,7 @@
 	export let title: string;
 	export let toc: Array<TocItem>;
 	export let currentStep: number;
+	export let back: string;
 
 	export let tutorials: Array<Tutorial>;
 
@@ -28,7 +29,9 @@
 					<slot name="metadata" />
 				</ul>
 				<div class="u-position-relative u-flex u-cross-center">
-					<button
+					{#if back}
+					<a
+						href={back}
 						class="
 						aw-button is-text is-only-icon aw-u-cross-center aw-u-size-40
 						u-position-absolute u-inset-inline-start-0 aw-u-translate-x-negative"
@@ -38,7 +41,8 @@
 							class="icon-cheveron-left aw-u-font-size-24 aw-u-color-text-primary aw-is-not-mobile"
 							aria-hidden="true"
 						/>
-					</button>
+					</a>
+					{/if}
 					<h1 class="aw-title">{title}</h1>
 				</div>
 			</div>