docs: [] update disclaimer + add sign-up deep link (#132)

Author: cf-remylenoir

README.md

@@ -12,11 +12,11 @@ $~$
 
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-## DISCLAIMER
+## DISCLAIMER ⚠️
 
-This document outlines information available as part of a beta Contentful's Starter Templates journey.
+The Starter Templates experience is currently only available to new users.
 
-If your sole curiosity brought you to this repository, you will not be able to get the full potential of this Starter Template until an upcoming release.
+To benefit from this experience, please follow this link to create a new account: [https://www.contentful.com/sign-up/?action=create_starter_template](https://www.contentful.com/sign-up/?action=create_starter_template).
 
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docs/tutorials/contentful-and-the-starter-template.md

@@ -1,8 +1,8 @@
-# DISCLAIMER
+# DISCLAIMER ⚠️
 
-This document outlines steps to follow as part of Contentful's Starter Templates journey.
+The Starter Templates experience is currently only available to new users.
 
-If your sole curiosity brought you to this repository, you will not be able to follow the tutorial and get the full potential of this Starter Template until an upcoming release.
+To benefit from this experience, please follow this link to create a new account: [https://www.contentful.com/sign-up/?action=create_starter_template](https://www.contentful.com/sign-up/?action=create_starter_template).
 
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