DOC-3329: Remove mention of commercial from the list.

Author: kemister85

modules/ROOT/pages/npm-projects.adoc

@@ -48,7 +48,7 @@ The `+tinymce-premium+` package requires a commercial license. Ensure you have a
 Before installing premium plugins, ensure you have:
 
 * The core `+tinymce+` package installed (see above)
-* A valid commercial license key
+* A valid license key
 * Node.js and npm installed
 
 === Install the premium plugins package