修复http/https协议下，css js无法加载问题

配置如下

//开启https加载js和css/
// wordpress强制跳转https后，JS/CSS不加载的解决方案
add_filter('script_loader_src', 'agnostic_script_loader_src', 20,2);
function agnostic_script_loader_src($src, $handle) {
  return preg_replace('/^(http|https):/', '', $src);
}
add_filter('style_loader_src', 'agnostic_style_loader_src', 20,2);
function agnostic_style_loader_src($src, $handle) {
  return preg_replace('/^(http|https):/', '', $src);
}