Merge pull request #39 from lateau/master

typo

koans/atoms-vs-lists.lsp

@@ -16,8 +16,8 @@
 (define-test test-list-or-atom
     "Lists in lisp are forms beginning and ending with rounded parentheses.
      Atoms are symbols, numbers, or other forms usually separated by
-     white-space or parentheses.  The function 'listp' will return true iff
-     the input is a list.  The function 'atom' will return true iff the
+     white-space or parentheses.  The function 'listp' will return true if
+     the input is a list.  The function 'atom' will return true if the
      input is an atom."
   (true-or-false? ___ (listp '(1 2 3)))
   (true-or-false? ___ (atom '(1 2 3)))
@@ -45,4 +45,4 @@
     "symbols like :hello or :like-this are treated differently in lisp.
      Called keywords, they are symbols that evaluate to themselves."
   (true-or-false? ___ (equal :this-is-a-keyword :this-is-a-keyword))
-  (true-or-false? ___ (equal :this-is-a-keyword ':this-is-a-keyword)))
+  (true-or-false? ___ (equal :this-is-a-keyword ':this-is-a-keyword)))