fix(cloudflare): Move onRequest snippet to Cloudflare Pages (#15837)

<!-- Use this checklist to make sure your PR is ready for merge. You may
delete any sections you don't need. -->

## DESCRIBE YOUR PR

The snippet was in the wrong section as it is not relevant for
Cloudflare Workers but for Cloudflare Pages instead.

## IS YOUR CHANGE URGENT?  

Help us prioritize incoming PRs by letting us know when the change needs
to go live.
- [ ] Urgent deadline (GA date, etc.): <!-- ENTER DATE HERE -->
- [ ] Other deadline: <!-- ENTER DATE HERE -->
- [x] None: Not urgent, can wait up to 1 week+

## SLA

- Teamwork makes the dream work, so please add a reviewer to your PRs.
- Please give the docs team up to 1 week to review your PR unless you've
added an urgent due date to it.
Thanks in advance for your help!

## PRE-MERGE CHECKLIST

*Make sure you've checked the following before merging your changes:*

- [x] Checked Vercel preview for correctness, including links
- [x] PR was reviewed and approved by any necessary SMEs (subject matter
experts)
- [ ] PR was reviewed and approved by a member of the [Sentry docs
team](https://github.com/orgs/getsentry/teams/docs)

## LEGAL BOILERPLATE

<!-- Sentry employees and contractors can delete or ignore this section.
-->

Look, I get it. The entity doing business as "Sentry" was incorporated
in the State of Delaware in 2015 as Functional Software, Inc. and is
gonna need some rights from me in order to utilize my contributions in
this here PR. So here's the deal: I retain all rights, title and
interest in and to my contributions, and by keeping this boilerplate
intact I confirm that Sentry can use, modify, copy, and redistribute my
contributions, under Sentry's choice of terms.

## EXTRA RESOURCES

- [Sentry Docs contributor guide](https://docs.sentry.io/contributing/)

Author: JPeer264

docs/platforms/javascript/guides/cloudflare/index.mdx

@@ -51,28 +51,6 @@ The main Sentry configuration should happen as early as possible in your app's l
   platform="javascript.cloudflare.workers"
 />
 
-<Expandable title="Don't have access to onRequest?">
-If you don't have access to the `onRequest` middleware API, you can use the `wrapRequestHandler` API instead. For example:
-
-```javascript
-// hooks.server.js
-import * as Sentry from "@sentry/cloudflare";
-
-export const handle = ({ event, resolve }) => {
-  const requestHandlerOptions = {
-    options: {
-      dsn: event.platform.env.SENTRY_DSN,
-      tracesSampleRate: 1.0,
-    },
-    request: event.request,
-    context: event.platform.ctx,
-  };
-  return Sentry.wrapRequestHandler(requestHandlerOptions, () => resolve(event));
-};
-```
-
-</Expandable>
-
 ### Setup for Cloudflare Pages
 
 To use the Sentry SDK, add the `sentryPagesPlugin` as [middleware to your Cloudflare Pages application](https://developers.cloudflare.com/pages/functions/middleware/).
@@ -112,6 +90,28 @@ export const onRequest = [
 ];
 ```
 
+<Expandable title="Don't have access to onRequest?">
+If you don't have access to the `onRequest` middleware API, you can use the `wrapRequestHandler` API instead. For example:
+
+```javascript
+// hooks.server.js
+import * as Sentry from "@sentry/cloudflare";
+
+export const handle = ({ event, resolve }) => {
+  const requestHandlerOptions = {
+    options: {
+      dsn: event.platform.env.SENTRY_DSN,
+      tracesSampleRate: 1.0,
+    },
+    request: event.request,
+    context: event.platform.ctx,
+  };
+  return Sentry.wrapRequestHandler(requestHandlerOptions, () => resolve(event));
+};
+```
+
+</Expandable>
+
 ## Step 3: Add Readable Stack Traces With Source Maps (Optional)
 
 <PlatformContent includePath="getting-started-sourcemaps-short-version" />