Fix wrong default timezone

conf/app.php

@@ -3,7 +3,7 @@
  * Config
  */
 return array(
-    'default_timezone' => 'Asia/Shanghai',   //timezone
+    'default_timezone' => 'Asia/Hong_Kong',   //timezone, check more: https://www.php.net/manual/en/timezones.asia.php
 
     'content_directory' => 'content',       //directory of contents
     'theme' => '',                          //name of theme which is enabled

www/index.php

@@ -2,7 +2,7 @@
 /* All php controller enter from here */
 $start_time = microtime(true);        //for time cost
 $config = require_once __DIR__ . '/../conf/app.php';
-$default_timezone = !empty($config['default_timezone']) ? $config['default_timezone'] : 'Hongkong';
+$default_timezone = !empty($config['default_timezone']) ? $config['default_timezone'] : 'Asia/Hong_Kong';
 date_default_timezone_set($default_timezone);
 $config['start_time'] = $start_time;