Fixed rules namespace

Author: vuongxuongminh

src/rules/AbstractStaticRegexRule.php renamed to src/Rules/AbstractStaticRegexRule.php

@@ -5,7 +5,7 @@
  * @license [MIT](https://opensource.org/licenses/MIT)
  */
 
-namespace PHPViet\Validation\rules;
+namespace PHPViet\Validation\Rules;
 
 use Respect\Validation\Rules\AbstractRegexRule;
 

src/rules/IdVN.php renamed to src/Rules/IdVN.php

@@ -5,7 +5,7 @@
  * @license [MIT](https://opensource.org/licenses/MIT)
  */
 
-namespace PHPViet\Validation\rules;
+namespace PHPViet\Validation\Rules;
 
 /**
  * @author Vuong Minh <vuongxuongminh@gmail.com>

src/rules/LandLineVN.php renamed to src/Rules/LandLineVN.php

@@ -5,7 +5,7 @@
  * @license [MIT](https://opensource.org/licenses/MIT)
  */
 
-namespace PHPViet\Validation\rules;
+namespace PHPViet\Validation\Rules;
 
 /**
  * @author Vuong Minh <vuongxuongminh@gmail.com>

src/rules/MobileVN.php renamed to src/Rules/MobileVN.php

@@ -5,7 +5,7 @@
  * @license [MIT](https://opensource.org/licenses/MIT)
  */
 
-namespace PHPViet\Validation\rules;
+namespace PHPViet\Validation\Rules;
 
 /**
  * @author Vuong Minh <vuongxuongminh@gmail.com>