Update collections.js

Fix assertion description

Author: liroyleshed

test/collections.js

@@ -438,7 +438,7 @@
 
   QUnit.test('includes with NaN', function(assert) {
     assert.strictEqual(_.includes([1, 2, NaN, NaN], NaN), true, 'Expected [1, 2, NaN] to contain NaN');
-    assert.strictEqual(_.includes([1, 2, Infinity], NaN), false, 'Expected [1, 2, NaN] to contain NaN');
+    assert.strictEqual(_.includes([1, 2, Infinity], NaN), false, 'Expected [1, 2, Infinity] to NOT contain NaN');
   });
 
   QUnit.test('includes with +- 0', function(assert) {