combinators: Fix case of variable name in procedure documentation strings

modules/radix/combinators.scm

@@ -12,12 +12,12 @@
 
 (define (all-of pred)
   "Returns a procedure that takes a list LST and returns #t if every other 
-element of LST satisfies pred."
+element of LST satisfies PRED."
   (lambda (lst) (null? (filter (negate pred) lst))))
 
 (define (any-of pred)
   "Returns a procedure that takes a list LST and returns #t if any element of
-LST satisfies pred."
+LST satisfies PRED."
   (match-lambda
     (() #f)
     ((head . tail)