u3: corrects _cu_from_loom() stack struct comment
@@ -95,8 +95,8 @@ _cu_box_stash(u3a_noun* som_u, ur_nref ref)
// In Hoon, this structure would be as follows:
//
// $% [%root ~]
-// [%head cell=^]
-// [%tail cell=^ hed-mug=@]
+// [%head loom-cell=^]
+// [%tail loom-cell=^ off-loom-head=*]
// ==
//
