adding china network video to china product page (#18252)

* adding china network video to china product page

* updating text on homepage

src/content/docs/china-network/index.mdx

@@ -8,6 +8,8 @@ head:
     content: Overview | Cloudflare China Network
 ---
 
+import { Stream } from "~/components"
+
 The [Cloudflare China Network](https://www.cloudflare.com/china-network/) is a package of selected Cloudflare's performance and security products running on data centers located in mainland China and operated by Cloudflare's partner JD Cloud.
 
 The data centers cover most populated regions in China. Combining Cloudflare's technological leadership and JD Cloud's local operations expertise, the Cloudflare China Network is designed to meet the needs for secure, reliable, and fast-performing content delivery in China. You can use the same configurations that you use with Cloudflare everywhere else in the world and with the same dashboard experience.
@@ -22,6 +24,11 @@ The Cloudflare China Network provides:
 - [In-China Authoritative DNS and in-China nameservers](/china-network/concepts/china-dns/) to improve the Time to First Byte (TTFB) performance.
 - [China Express](/china-network/concepts/china-express) is a suite of connectivity, performance offerings and professional services designed to simplify your global assets' deployment in China.
 
+### Video Introduction
+
+<Stream videoId="b7933a5b3636ca29f834128ca92665b3" videoTitle="China Network Overview" thumbnailTimeOrURL="1s" />
+
+
 ## Availability
 
 The Cloudflare China Network is available as a separate subscription for customers on an [Enterprise plan](https://www.cloudflare.com/plans/enterprise/).

src/pages/index.astro

@@ -73,7 +73,7 @@ const topCards = [
 		title: "AI Products",
 		links: [
 			{
-				text: "Build a RAG",
+				text: "Build a RAG app",
 				href: "/workers-ai/tutorials/build-a-retrieval-augmented-generation-ai/",
 			},
 			{ text: "Workers AI", href: "/workers-ai/" },