Fix the template: do not use 'global' keyword

ejabberd.yml.example

@@ -354,13 +354,12 @@ acl:
   ## blocked:
   ##   user:
   ##     - "baduser": "example.org"
-  ##     - "test": global
+  ##     - "test"
 
   ## Local users: don't modify this.
   ##
   local: 
-    user_regexp: 
-      - "": global
+    user_regexp: ""
 
   ##
   ## More examples of ACLs
@@ -372,10 +371,8 @@ acl:
   ##   user:
   ##     - "aleksey": "jabber.ru"
   ## test:
-  ##   user_regexp:
-  ##     - "^test": global
-  ##   user_glob:
-  ##     - "test*": global
+  ##   user_regexp: "^test"
+  ##   user_glob: "test*"
 
   ##
   ## Loopback network