2014-06-05: d20world: improve style

d20world: improve style

diff --git a/examples/d20world.w b/examples/d20world.w
--- a/examples/d20world.w
+++ b/examples/d20world.w
@@ -66,8 +66,8 @@ let loop : : relationships neighbors-hel
    else
     let* 
       : cur : car relationships
-          idx : 1- : car cur
-          vec : cdr cur
+        idx : 1- : car cur
+        vec : cdr cur
       vector-set! world idx : 1+ idx
       vector-set! neighbors idx : make-vector 3
       let setidx : : idxtoset '(0 1 2)