clarified template options

Configuration.md

@@ -66,6 +66,15 @@ Size limit per paste and comment in bytes, defaults to 2 Mibibytes (2097152 byte
 
 PrivateBin template to use, the default one is `bootstrap`. The templates can be found in the folder `tpl/` and are saved as `php` files, i.e. `tpl/bootstrap.php`.
 
+Currently supported templates are ([Preview](../Templates#templates-included-in-privatebin)):
+* bootstrap
+* bootstrap-page
+* bootstrap-dark
+* bootstrap-dark-page
+* bootstrap-compact
+* bootstrap-compact-page
+* page
+
 ### notice
 
 This is an optional notice message displayed above the text input. Disabled by default.