update C3 instructions for Pages projects (#22005)

It is now required to pass `--platform=pages` to create a Pages project.

Author: petebacondarwin

src/content/docs/pages/get-started/c3.mdx

@@ -25,10 +25,14 @@ Cloudflare provides a CLI command for creating new Workers and Pages projects 
 
 Open a terminal window and run:
 
-<Render file="c3-run-command-no-directory" product="workers" />
+<Render file="c3-run-command-no-directory" product="pages" />
 
 Running this command will prompt you to install the [`create-cloudflare`](https://www.npmjs.com/package/create-cloudflare) package, and then ask you questions about the type of application you wish to create.
 
+:::note
+To create a Pages project you must now specify the `--platform=pages` arg, otherwise C3 will always create a Workers project.
+:::
+
 ## Web frameworks
 
 If you choose the "Framework Starter" option, you will be prompted to choose a framework to use. The following frameworks are currently supported:
@@ -71,25 +75,7 @@ C3 collects any required input through a series of interactive prompts. You may
 
 This is the full format of a C3 invocation alongside the possible CLI arguments:
 
-<Tabs> <TabItem label="npm">
-
-```sh
-npm create cloudflare@latest [--] [<DIRECTORY>] [OPTIONS] [-- <NESTED ARGS...>]
-```
-
-</TabItem> <TabItem label="yarn">
-
-```sh
-yarn create cloudflare [--] [<DIRECTORY>] [OPTIONS] [-- <NESTED ARGS...>]
-```
-
-</TabItem> <TabItem label="pnpm">
-
-```sh
-pnpm create cloudflare@latest [--] [<DIRECTORY>] [OPTIONS] [-- <NESTED ARGS...>]
-```
-
-</TabItem> </Tabs>
+<PackageManagers type="create" pkg="cloudflare@latest" args="--platform=pages [<DIRECTORY>] [OPTIONS] [-- <NESTED ARGS...>]"/>
 
 - `DIRECTORY` <Type text="string" /> <MetaInfo text="optional" />
 

src/content/partials/pages/c3-run-command-no-directory.mdx

@@ -0,0 +1,8 @@
+---
+{}
+---
+
+import { PackageManagers } from "~/components";
+
+<PackageManagers type="create" pkg="cloudflare@latest" args="--platform=pages"/>
+