fix linuxmuster.net version in setup dialog.

Author: HappyBasher

lib/setup.d/c_general-dialog.py

@@ -2,7 +2,7 @@
 #
 # general setup
 # thomas@linuxmuster.net
-# 20250729
+# 20251118
 #
 
 import environment
@@ -38,7 +38,7 @@
 # iface_list, iface_default = detectedInterfaces()
 
 # begin dialog
-title = 'linuxmuster.net 7.2: Setup for ' + \
+title = 'linuxmuster.net 7.3: Setup for ' + \
     servername + '.' + domainname + '\n\n'
 dialog = Dialog(dialog="dialog")
 dialog.set_background_title(title)