fix: typo (#397)

docs/toc.json

@@ -19,7 +19,7 @@
   "concepts": {
     "title": "Concepts",
     "pages": [
-      ["architechture", "Architecture"],
+      ["architecture", "Architecture"],
       ["routes", "Routes"],
       ["islands", "Interactive islands"],
       ["static-files", "Static files"],

www/routes/docs/[...slug].tsx

@@ -31,6 +31,13 @@ export const handler: Handlers<Data> = {
         headers: { location: "/docs/introduction" },
       });
     }
+    if (slug === "concepts/architechture") {
+      return new Response("", {
+        status: 307,
+        headers: { location: "/docs/concepts/architecture" },
+      });
+    }
+
     const entry = TABLE_OF_CONTENTS[slug];
     if (!entry) {
       return ctx.renderNotFound();