add not for dynamic secrets as paid feature

docs/documentation/platform/dynamic-secrets/overview.mdx

@@ -4,6 +4,13 @@ sidebarTitle: "Overview"
 description: "Learn how to generate secrets dynamically on-demand."
 ---
 
+<Info>
+    Note that Dynamic Secrets is a paid feature.
+
+    If you're using Infisical Cloud, then it is available under the **Enterprise Tier** 
+    If you're self-hosting Infisical, then you should contact [email protected] to purchase an enterprise license to use it.
+</Info>
+
 ## Introduction
 
 Contrary to static key-value secrets, which require manual input of data into the secure Infisical storage, **dynamic secrets are generated on-demand upon access**.