style: space after comma

Author: coke

doc/Language/list.pod6

@@ -117,12 +117,12 @@ list in order and stopping after the last element:
 =head2 X<Single Argument Rule>
 
 It is the rule by which the set of parameters passed to an iterator such as C<for> is treated as a single argument, instead of several arguments; that is
-C<some-iterator( a, b, c, ...)> will always be treated as C<some-iterator( list-or-array(a,b,c))> and never as C<(some-iterator(a))(b)...>, that is, iterative application of the iterator to the first argument, then the result to the next argument, and so on. In this example
+C<some-iterator( a, b, c, ...)> will always be treated as C<some-iterator( list-or-array(a, b, c))> and never as C<(some-iterator(a))(b)...>, that is, iterative application of the iterator to the first argument, then the result to the next argument, and so on. In this example
 
 =begin code
-my @list = [ (1,2,3),
-             (1,2,),
-             [<a b c>,<d e f>],
+my @list = [ (1, 2, 3),
+             (1, 2, ),
+             [<a b c>, <d e f>],
              [[1]] ];
 
 for @list -> @element {