Merge pull request #561 from notmatt/mbs-fixups

exercises/primitive_types/primitive_types6.rs

@@ -8,9 +8,9 @@
 #[test]
 fn indexing_tuple() {
     let numbers = (1, 2, 3);
-    /// Replace below ??? with the tuple indexing syntax.
+    // Replace below ??? with the tuple indexing syntax.
     let second = ???;
 
-    assert_eq!(2, second
+    assert_eq!(2, second,
         "This is not the 2nd number in the tuple!")
 }