Fix alpha dash test

tests/fapi_validation.test

@@ -73,7 +73,7 @@ class FAPIVTestCase extends DrupalWebTestCase {
       'url2Field' => 'aaaaaaa',
       'ipv4Field' => '192.168.400.1',
       'alpha_numericField' => 'abcd1234#%',
-      'alpha_dashField' => 'abc-abc_abc421',
+      'alpha_dashField' => 'abc-abc_abc421$@%',
       'digitField' => '1234aaa',
       'decimal1Field' => '123',
       'decimal2Field' => '123312.aaa',