docs: remove references to demo config

Author: denolfe

docs/admin/components.mdx

@@ -22,7 +22,7 @@ You can override a set of admin panel-wide components by providing a component t
 | Path                  | Description  |
 | --------------------- | -------------|
 | **`Nav`**             | Contains the sidebar and mobile Nav in its entirety. |
-| **`BeforeDashboard`** | Array of components to inject into the built-in Dashboard, _before_ the default dashboard contents. [Demo](https://github.com/payloadcms/payload/tree/master/demo/client/components/AfterDashboard) |
+| **`BeforeDashboard`** | Array of components to inject into the built-in Dashboard, _before_ the default dashboard contents. |
 | **`AfterDashboard`**  | Array of components to inject into the built-in Dashboard, _after_ the default dashboard contents. |
 | **`BeforeLogin`**     | Array of components to inject into the built-in Login, _before_ the default login form. |
 | **`AfterLogin`**      | Array of components to inject into the built-in Login, _after_ the default login form. |

docs/configuration/collections.mdx

@@ -52,7 +52,7 @@ const Orders = {
 
 #### More collection config examples
 
-You can find an assortment of [example collection configs](https://github.com/payloadcms/payload/blob/master/demo/collections) in the Payload source code on GitHub.
+You can find an assortment of [example collection configs](https://github.com/payloadcms/public-demo/tree/master/src/collections) in the Public Demo source code on GitHub.
 
 ### Admin options
 

docs/configuration/globals.mdx

@@ -50,9 +50,9 @@ const Nav = {
 }
 ```
 
-#### More Global config examples
+#### Global config example
 
-You can find an assortment of [example Global configs](https://github.com/payloadcms/payload/blob/master/demo/globals) in the Payload source code on GitHub.
+You can find an [example Global config](https://github.com/payloadcms/public-demo/blob/master/src/globals/MainMenu.ts) in the Public Demo source code on GitHub.
 
 ### Admin options
 

docs/configuration/overview.mdx

@@ -89,7 +89,7 @@ export default config;
 
 #### Full example config
 
-You can see a full [example config](https://github.com/payloadcms/payload/blob/master/demo/payload.config.ts) in the Payload source code on GitHub.
+You can see a full [example config](https://github.com/payloadcms/public-demo/blob/master/src/payload.config.ts) in the Public Demo source code on GitHub.
 
 ### Using environment variables in your config
 

docs/fields/rich-text.mdx

@@ -181,7 +181,7 @@ Custom `Leaf` objects follow a similar pattern but require you to define the `Le
 }
 ```
 
-For more examples regarding how to define your own elements and leaves, check out the example [`RichText` collection](https://github.com/payloadcms/payload/blob/master/demo/collections/RichText.ts) within the Payload source code.
+For more examples regarding how to define your own elements and leaves, check out the example [`RichText` field](https://github.com/payloadcms/public-demo/blob/master/src/fields/hero.ts) within the Public Demo source code.
 
 ### Generating HTML