get_list_config.sh: correct 'usage' putput.

get_list_config.sh

@@ -21,7 +21,7 @@ usage() {
    [[ $terminal ]] && echo -e "
 \033[1mUsage:\033[m
 
-   $(basename $0) <fq-list-address>
+   $(basename $0) -l <fq-list-address>
 
 \033[1mDescription\033[m
 
@@ -36,7 +36,8 @@ usage() {
    -l name@domain
 
       Prints out the configuration for the list \033[1mname@domain\033[m.
-      Then list name must be given as full qualified list address.
+      The list name must be given as full qualified list address. This 
+      parameter is mandatory.
 
 
 \033[1mExample:\033[m