Added public project requirement (stoplightio#2302)

Moved public project requirement to overview.

.gitignore

@@ -49,4 +49,5 @@ dist-storybook
 # Stoplight style guides
 .stoplight/styleguide.json
 .stoplight/custom-functions
-.spectral.json
+.spectral.json
+.spectral.mjs

docs/getting-started/dev-portal/introduction.md

@@ -1,16 +1,18 @@
 ## Introduction to Elements Dev Portal
 
-Elements Dev Portal is backed by the [Stoplight Platform](https://stoplight.io/) and can do many things. 
+Elements Dev Portal is backed by the [Stoplight Platform](https://stoplight.io/) and offers: 
 
-- Support multiple APIs
-- Markdown Articles
-- [Hosted Mock Server](https://meta.stoplight.io/docs/platform/3.-design/d.setting-up-a-mock-server.md) Integration
-- Version Selector (Multiple Branches)
-- Powerful Search
+- Support for multiple APIs
+- Markdown article rendering
+- [Hosted mock servers](https://meta.stoplight.io/docs/platform/3.-design/d.setting-up-a-mock-server.md)
+- Version selector (multiple branches)
+- Powerful search
 
-> Elements Dev Portal can be used for free during development on your local machine. If you need to use it in a production environment, [subscribe to a paid plan](https://stoplight.io/pricing).
+## Stoplight Platform
 
-Think of the developer portal as more of a Content Management System, focused entirely on making an awesome developer experience for an organization.
+Elements Dev Portal can be used for free during development on your local machine. To use the Dev Portal in a production environment, [subscribe to a paid plan](https://stoplight.io/pricing).
+
+The Elements Dev Portal must be connected to [a public project](https://docs.stoplight.io/docs/platform/be67e532b4b2a-manage-project-access#change-project-visibility) in the Stoplight Platform. A ‘Forbidden’ error occurs if the project visibility isn't set to Public.
 
 ## Next steps
 

docs/getting-started/dev-portal/react.md

@@ -33,9 +33,6 @@ import '@stoplight/elements-dev-portal/styles.min.css';
 
 3. Find the **Project ID** from the **Project Settings** page in your Stoplight project. See [Project Settings](https://docs.stoplight.io/docs/platform/252039ebe8fb2-project-settings) for details. 
 
->Note: A ‘Forbidden’ error occurs if the project visibility isn't set to Public.
-
-
 > Project Settings can only be viewed by Project Editors or above. Read more about [project permissions](https://meta.stoplight.io/docs/platform/ZG9jOjg1NjcyNzE-manage-project-access#project-roles).
 
 ![The project ID can be found on the Project Settings page in a text box after Display Name and Slug](../../images/projectId.png)