Fix typo in variables.conf template

variables.conf.template

@@ -15,8 +15,8 @@ remote_pubkey='home.pub'
 # Choose one of the following use cases:
 #use_case='upnp-renderer'
 #use_case='ssh-bounce-server'
-#use-case='printscan-server'
-#use-case='nas-server'
+#use_case='printscan-server'
+#use_case='nas-server'
 
 # Choose one of the following SBC:
 #sbc='pine64'