feat(user-center): upgrade posts panel to creator center

src/User/Center.php

@@ -128,7 +128,7 @@ class Center {
                 'type'     => 'panel',
             ],
             'posts' => [
-                'label'    => __('我的文章', 'aksrt'),
+                'label'    => __('创作中心', 'aksrt'),
                 'icon'     => 'file-alt',
                 'priority' => 20,
                 'type'     => 'panel',