small fix to delete_values_spec.rb and README.markdown

README.markdown

@@ -215,6 +215,8 @@ Deletes all instances of a given value from a hash.
 Would return: {'a'=>'A','c'=>'C','B'=>'D'}
 
 
+- *Type*: rvalue
+
 delete_undef_values
 -------------------
 Deletes all instances of the undef value from an array or hash.

spec/unit/puppet/parser/functions/delete_values_spec.rb

@@ -13,7 +13,7 @@ describe "the delete_values function" do
   end
 
   it "should raise a ParseError if there are greater than 2 arguments" do
-    lambda { scope.function_delete([[], 'foo', 'bar']) }.should( raise_error(Puppet::ParseError))
+    lambda { scope.function_delete_values([[], 'foo', 'bar']) }.should( raise_error(Puppet::ParseError))
   end
 
   it "should raise a TypeError if the argument is not a hash" do