update legal config key value formats

Author: tbrowder

doc/Language/pod.pod6

@@ -51,8 +51,8 @@ Perl6-ish option pairs. That is, any of:
  Boolean (true)    :key                  :key(1)
  Boolean (false)   :!key                 :key(0)
  String            :key<str>             :key('str')
- List              :key<1 2 3>           :key[1, 2, 3]
- Hash              :key{a=>1, b=>2}
+ List              :key[1, 'b', 3]
+ Hash              :key{a=>1, b=>'x'}
 =end table
 
 All option keys and values must, of course, be constants since Pod is a