feat: Update template

gitea/clean.sls

@@ -1,6 +1,17 @@
-# -*- coding: utf-8 -*-
 # vim: ft=sls
 
+{#-
+    *Meta-state*.
+
+    This state will undo everything performed in the ``gitea`` meta-state
+    in reverse order, i.e.
+    stops the service,
+    removes the configuration file and then
+    uninstalls the package.
+    Some paths are left to avoid accidental data loss
+    (namely ``GITEA_WORKDIR``, ``APP_DATA_PATH`` and the gitea user home).
+#}
+
 include:
   - .service.clean
   - .config.clean