Fixed misspelling of "multiple" (http://www.pivotaltracker.com/story/show/2072574)

Author: jimweirich

koans/about_scoring_project.rb

@@ -46,7 +46,7 @@ def test_score_of_a_single_roll_of_1_is_100
     assert_equal 100, score([1])
   end
 
-  def test_score_of_mulitple_1s_and_5s_is_the_sum_of_individual_scores
+  def test_score_of_multiple_1s_and_5s_is_the_sum_of_individual_scores
     assert_equal 300, score([1,5,5,1])
   end
 

src/about_scoring_project.rb

@@ -67,7 +67,7 @@ def test_score_of_a_single_roll_of_1_is_100
     assert_equal 100, score([1])
   end
 
-  def test_score_of_mulitple_1s_and_5s_is_the_sum_of_individual_scores
+  def test_score_of_multiple_1s_and_5s_is_the_sum_of_individual_scores
     assert_equal 300, score([1,5,5,1])
   end