Corrected an invalid test case

Signed-off-by: David Woods <d.woods92@gmail.com>
diff --git a/tests/codeigniter/libraries/Form_validation_test.php b/tests/codeigniter/libraries/Form_validation_test.php
index bfc2083..5b2e9de 100644
--- a/tests/codeigniter/libraries/Form_validation_test.php
+++ b/tests/codeigniter/libraries/Form_validation_test.php
@@ -256,8 +256,8 @@
         $this->assertTrue($this->run_rule('valid_url', ''));
         $this->assertTrue($this->run_rule('valid_url', 'www.codeigniter.com'));
         $this->assertTrue($this->run_rule('valid_url', 'http://codeigniter.eu'));
-        
-        $this->assertFalse($this->run_rule('valid_url', 'codeigniter.c'));
+   
+        $this->assertFalse($this->run_rule('valid_url', 'codeigniter'));
     }
     
     public function test_rule_valid_email()