nixos/switch-to-configuration: fix comment position

nixos/modules/system/activation/switch-to-configuration.pl

@@ -140,15 +140,14 @@ sub call_systemd_dbus_api {
     return $res;
 }
 
+# Replacement for Net::DBus that calls busctl of the current systemd, parses
+# it's json output and returns the response using only core modules to reduce
+# dependencies on perlPackages in baseSystem
 sub busctl_call_systemd1_mgr {
     my (@args) = @_;
     return call_systemd_dbus_api("systemd1", @args);
 }
 
-# Replacement for Net::DBus that calls busctl of the current systemd, parses
-# it's json output and returns the response using only core modules to reduce
-# dependencies on perlPackages in baseSystem
-
 # Asks the currently running systemd instance via dbus which units are active.
 # Returns a hash where the key is the name of each unit and the value a hash
 # of load, state, substate.