move clerkclient init outside of request

Author: alexisintech

docs/_partials/authenticate-req.mdx

@@ -83,15 +83,15 @@
     ```tsx
     import { createClerkClient } from '@clerk/backend'
 
-    export async function GET(req: Request) {
-      // Initialize the JS Backend SDK
-      // This varies depending on the SDK you're using
-      // https://clerk.com/docs/js-backend/getting-started/quickstart
-      const clerkClient = createClerkClient({
-        secretKey: process.env.CLERK_SECRET_KEY,
-        publishableKey: process.env.CLERK_PUBLISHABLE_KEY,
-      })
+    // Initialize the JS Backend SDK
+    // This varies depending on the SDK you're using
+    // https://clerk.com/docs/js-backend/getting-started/quickstart
+    const clerkClient = createClerkClient({
+      secretKey: process.env.CLERK_SECRET_KEY,
+      publishableKey: process.env.CLERK_PUBLISHABLE_KEY,
+    })
 
+    export async function GET(req: Request) {
       // Use the `authenticateRequest()` method to verify the token
       const { isAuthenticated } = await clerkClient.authenticateRequest(req, {
         authorizedParties: ['https://example.com'],