Update src/app/page.tsx

Merge version_3 into main

src/app/page.tsx

@@ -133,6 +133,10 @@ export default function LandingPage() {
       textboxLayout="split"
       gridVariant="three-columns-all-equal-width"
       useInvertedBackground={false}
+      buttons={[
+        {
+          text: "メニューを詳しく見る",          href: "/menu"},
+      ]}
       products={[
         {
           id: "p1",          name: "しょうゆらーめん",          price: "定番",          variant: "背脂の甘み × キレある醤油",          imageSrc: "http://img.b2bpic.net/free-photo/salmon-sushi-bowl-with-japanese-style-sauce_1339-6227.jpg"},