Correct markup for breadcrumbs

breadcrumb_schema.html

<ul itemscope itemtype="http://schema.org/BreadcrumbList">
    <li itemscope itemprop="itemListElement" itemtype="http://schema.org/ListItem">
        <a title="Наименование сайта" itemprop="item" content="https://site.ru/" href="/">
            <span itemprop="name">Главная</span>
        </a>
        <meta itemprop="position" content="1">
    </li>
    <li itemscope itemprop="itemListElement" itemtype="http://schema.org/ListItem">
        <a title="Наименование раздела" itemprop="item" content="https://site.ru/category" href="/category">
            <span itemprop="name">Раздел</span>
        </a>
        <meta itemprop="position" content="2">
    </li>
    <li itemscope itemprop="itemListElement" itemtype="http://schema.org/ListItem">
        <span title="Текущая страница" itemprop="item" content="https://site.ru/category/currentpage">
            <span itemprop="name">Текущая страница</span>
        </span>
        <meta itemprop="position" content="3">
    </li>
</ul>

joomla.php

<?php

use Joomla\CMS\Uri\Uri;

defined('_JEXEC') or die;

echo '<ul itemscope itemtype="http://schema.org/BreadcrumbList">';

if (!$params->get('showLast', 1)) {
    array_pop($list);
}

$count = count($list);
$linkCurrent = Uri::current();
$linkRoot = substr(Uri::root(), 0, -1);

for ($i = 0; $i < $count; $i++) {
    if ($i == 1 && !empty($list[$i]->link) && !empty($list[$i - 1]->link) && $list[$i]->link == $list[$i - 1]->link) {
        continue;
    }

    if ($pos = strpos($list[$i]->name, '||')) {
        $name = trim(substr($list[$i]->name, 0, $pos));
    } else {
        $name = $list[$i]->name;
    }

    $meta = '<meta itemprop="position" content="' . ($i + 1) . '">';

    if ($i < $count - 1) {
        if (!empty($list[$i]->link)) {
            $link = explode('?', $list[$i]->link)[0];
            echo '<li itemscope itemprop="itemListElement" itemtype="http://schema.org/ListItem"><a itemprop="item" content="' . $linkRoot . $link . '" href="' . $link . '"><span itemprop="name">' . $name . '</span></a>' . $meta . '</li>';
        } else {
            echo '<li itemscope itemprop="itemListElement" itemtype="http://schema.org/ListItem"><span itemprop="item" content="' . $linkRoot . $link . '"><span itemprop="name">' . $name . '</span></span>' . $meta . '</li>';
        }
    } else {
        echo '<li itemscope itemprop="itemListElement" itemtype="http://schema.org/ListItem"><span itemprop="item" content="' . $linkCurrent . '"><span itemprop="name">' . $name . '</span></span>' . $meta . '</li>';
    }
}

echo '</ul>';

modx.snippet

{'pdoCrumbs' | snippet : [
    'showHome' => 1,
    'outputSeparator' => '',
    'tplWrapper' => '@INLINE <ul itemscope itemtype="http://schema.org/BreadcrumbList">{$output}</ul>',
    'tplHome' => '@INLINE
        <li itemscope itemprop="itemListElement" itemtype="http://schema.org/ListItem">
            <a title="{$_modx->config.site_name}" itemprop="item" content="{$_modx->config.site_url}" href="{$link}">
                <span itemprop="name">{$menutitle}</span>
            </a>
            <meta itemprop="position" content="{$idx}">
        </li>',
    'tpl' => '@INLINE
        <li itemscope itemprop="itemListElement" itemtype="http://schema.org/ListItem">
            <a title="{$menutitle}" itemprop="item" content="{$_modx->config.site_url}{$link}" href="{$link}">
                <span itemprop="name">{$menutitle}</span>
            </a>
            <meta itemprop="position" content="{$idx}">
        </li>',
    'tplCurrent' => '@INLINE
        <li itemscope itemprop="itemListElement" itemtype="http://schema.org/ListItem">
            <span title="{$menutitle}" itemprop="item" content="{$_modx->config.site_url}{$link}">
                <span itemprop="name">{$menutitle}</span>
            </span>
            <meta itemprop="position" content="{$idx}">
        </li>'
]}