Guide proofread

* fix content of REPL output in quote example

* fix indentation on tail-recursive my-map code

collects/scribblings/guide/lists.scrbl

@@ -271,7 +271,7 @@ usually not worthwhile, as discussed below.}
      [(empty? lst) (reverse backward-result)]
      [else (iter (rest lst)
                  (cons (f (first lst))
-                          backward-result))]))
+                       backward-result))]))
   (iter lst empty))
 ]
 

collects/scribblings/guide/truth.scrbl

@@ -86,7 +86,7 @@ prints:
 
 @interaction[
 (eval:alts (@#,racket[quote] ("red" "green" "blue")) '("red" "green" "blue"))
-(eval:alts (@#,racket[quote] ((1) (2 3) (4))) '((1) (2 4) (4)))
+(eval:alts (@#,racket[quote] ((1) (2 3) (4))) '((1) (2 3) (4)))
 (eval:alts (@#,racket[quote] ()) '())
 ]