Update ValidatorTest.php

The method name testValidateEmailFullName() seemed to be inconsistent with the purpose and the rest of the method names.

tests/Utils/ValidatorTest.php

@@ -95,7 +95,7 @@ public function testValidateFullName()
         $this->assertSame($test, $this->object->validateFullName($test));
     }
 
-    public function testValidateEmailFullName()
+    public function testValidateFullNameEmpty()
     {
         $this->expectException('Exception');
         $this->expectExceptionMessage('The full name can not be empty.');