Add note about which version embedded tool is implemented (#10255)

docs/content/doc/advanced/cmd-embedded.en-us.md

@@ -22,6 +22,8 @@ inside the `custom` directory (see [Customizing Gitea]({{< relref "doc/advanced/
 To obtain a copy of the embedded resources ready for editing, the `embedded` command from the CLI
 can be used from the OS shell interface.
 
+**NOTE:** The embedded data extraction tool is included in Gitea versions 1.12 and above.
+
 ## Listing resources
 
 To list resources embedded in Gitea's executable, use the following syntax: