Add not on China unavailability

Author: RebeccaTamachiro

src/content/docs/secrets-store/index.mdx

@@ -19,4 +19,8 @@ Encrypt and store sensitive information as secrets that are securely reusable ac
 
 Cloudflare Secrets Store is a secure, centralized location in which account-level secrets are stored and managed. The secrets are stored across all Cloudflare data centers and encrypted using Cloudflare's internal Key Management System (KMS).
 
-Secrets Store is currently compatible with [Cloudflare Workers](/workers/). Integrations with other products will be added in the future. Learn how to [get started](/secrets-store/get-started/).
+Secrets Store is currently compatible with [Cloudflare Workers](/workers/). Integrations with other products will be added in the future. Learn how to [get started](/secrets-store/get-started/).
+
+:::note[China availability]
+Secrets Store is unavailable in the [Cloudflare China Network](/china-network/), operated by Cloudflare's partner JD Cloud.
+:::