use a more consistent description of one function's docstring in mapcar-and-reduce.lsp?

[JuanitoFatas]

INCORRECT-FUNCTION-X in Line 77 may change to WRONG-FUNCTION-X to match the code below:

(define-test test-mapcar-and-reduce
    "mapcar and reduce are a powerful combination.
     insert the correct function names, instead of INCORRECT-FUNCTION-X
     to define an inner product."
  (defun inner (x y)
    (reduce #'+ (mapcar #'* x y)))
  (assert-equal 32 (inner '(1 2 3) '(4 5 6)))
  (assert-equal 310 (inner '(10 20 30) '(4 3 7))))

[bileschi]

fixed. Thanks again.