fix typo in message

diff --git a/koans/about_nil.rb b/koans/about_nil.rb
index 5e1e28b..1a74ed0 100644 (file)
--- a/koans/about_nil.rb
+++ b/koans/about_nil.rb
@@ -8,7 +8,7 @@ class AboutNil < EdgeCase::Koan
   def test_you_dont_get_null_pointer_errors_when_calling_methods_on_nil
     # What happens when you call a method that doesn't exist.  The
     # following begin/rescue/end code block captures the exception and
-    # make some assertions about it.
+    # makes some assertions about it.
     begin
       nil.some_method_nil_doesnt_know_about
     rescue Exception => ex