docs: fix horizontal scroll (#5300)

www/apps/api-reference/app/api/[area]/layout.tsx

@@ -41,7 +41,7 @@ export default function RootLayout({
         <Providers>
           <Navbar />
           <div
-            className="w-full h-[calc(100%-57px)] overflow-y-scroll"
+            className="w-full h-[calc(100%-57px)] overflow-y-scroll overflow-x-hidden"
             id="main"
           >
             <div className="max-w-xxl mx-auto flex w-full px-1.5">