docs: add regions supported by Cloud (#13220)

* docs: add regions supported by Cloud

* fix vale error

* change location

www/apps/cloud/app/projects/page.mdx

@@ -69,8 +69,7 @@ To create a project:
 ![The project settings step in the project creation flow with the settings filled in](https://res.cloudinary.com/dza7lstvk/image/upload/v1749741990/Cloud/CleanShot_2025-06-12_at_18.26.15_2x_kyxggl.png)
 
 7. You can optionally change the "Build and project" settings by expanding its section:
-    - Select a region to deploy the project. For better performance, choose a region that's closer to your target users. The region can't be changed later.
-        - If you don't find the region you need, you can contact support to request it.
+    - Select a [region](#available-regions) to deploy the project. For better performance, choose a region that's closer to your target users. The region can't be changed later.
     - If your project is in a monorepo, you can specify the path to the Medusa project in the repository. Otherwise, leave it empty.
     - You can change the email and password for the admin user created for the project. These are the credentials you'll use to access the Medusa Admin.
 
@@ -119,7 +118,17 @@ When you choose a subdomain for your project, it must be at least five character
 - `production`
 - `preview`
 - `development`
-- `proxy`.
+- `proxy`
+
+### Available Regions
+
+Medusa supports hosting your Medusa projects on Cloud in the following regions:
+
+- US East (`us-east-1`)
+- Europe Central (`eu-central-1`)
+- Asia Southeast (`ap-southeast-1`)
+
+For better performance, choose a region that's closer to your target users. If you need to host your Medusa project in a different region, contact support.
 
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