Fix incorrectly capitalized class names in file module

modules/file/file.admin.controller.php

@@ -4,7 +4,7 @@
  * admin controller class of the file module
  * @author NAVER (developers@xpressengine.com)
  */
-class fileAdminController extends file
+class FileAdminController extends File
 {
 	/**
 	 * Initialization

modules/file/file.admin.model.php

@@ -4,7 +4,7 @@
  * Admin model class of the file module
  * @author NAVER (developers@xpressengine.com)
  */
-class fileAdminModel extends file
+class FileAdminModel extends File
 {
 	/**
 	 * Initialization

modules/file/file.admin.view.php

@@ -4,7 +4,7 @@
  * Admin view of the module class file
  * @author NAVER (developers@xpressengine.com)
  */
-class fileAdminView extends file
+class FileAdminView extends File
 {
 	/**
 	 * Initialization

modules/file/file.class.php

@@ -4,7 +4,7 @@
  * High class of the file module
  * @author NAVER (developers@xpressengine.com)
  */
-class file extends ModuleObject
+class File extends ModuleObject
 {
 	/**
 	 * Implement if additional tasks are necessary when installing

modules/file/file.controller.php

@@ -4,7 +4,7 @@
  * Controller class of the file module
  * @author NAVER (developers@xpressengine.com)
  */
-class fileController extends file
+class FileController extends File
 {
 	/**
 	 * Initialization

modules/file/file.model.php

@@ -4,7 +4,7 @@
  * Model class of the file module
  * @author NAVER (developers@xpressengine.com)
  */
-class fileModel extends file
+class FileModel extends File
 {
 	/**
 	 * Initialization

modules/file/file.view.php

@@ -4,7 +4,7 @@
  * The view class file module
  * @author NAVER (developers@xpressengine.com)
  */
-class fileView extends file
+class FileView extends File
 {
 	/**
 	 * Initialization