remove duplicated command print

examples/arrays.lisp

@@ -1,11 +1,11 @@
-(print (map (lambda (a) (add a 1)) (1 2 3)))
+(echo (map (lambda (a) (add a 1)) (1 2 3)))
 
 (
-  (print (first (1 2 3)))
-  (print (rest (1 2 3)))
+  (echo (first (1 2 3)))
+  (echo (rest (1 2 3)))
 )
 
-(print 
+(echo
   (filter 
     (lambda (a) (eq 0 (mod a 2))) 
     (1 2 3 4 5))

examples/logic.lisp

@@ -1,11 +1,11 @@
 (
-  (print (lt 3 4))
+  (echo (lt 3 4))
 
-  (print (and 1 2 true 4))
+  (echo (and 1 2 true 4))
 
-  (print (and 1 false 2))
+  (echo (and 1 false 2))
 
-  (print (or false false 2 false))
+  (echo (or false false 2 false))
 
-  (if (gt 1 2) (print "ok") (print "not ok"))
+  (if (gt 1 2) (echo "ok") (echo "not ok"))
 )