app-odoo/app_odoo_customize/views/app_odoo_customize_view.xml

<?xml version="1.0" encoding="UTF-8"?>
<odoo>
    <data>
        <template id="switch_language" name="switch_language assets" inherit_id="web.assets_backend">
            <xpath expr="." position="inside">
                <link rel="stylesheet" href="/app_odoo_customize/static/src/css/app.css"/>
                <script type="text/javascript" src="/app_odoo_customize/static/src/js/switch_language.js"></script>
                <script type="text/javascript" src="/app_odoo_customize/static/src/js/customize_user_menu.js"></script>
                <script type="text/javascript" src="/app_odoo_customize/static/src/js/app_window_title.js"/>
            </xpath>
        </template>

        <template id="replace_login" name="replace_login" inherit_id="web.login_layout">
            <xpath expr="//a[@href='https://www.odoo.com']" position="replace">
                <a href="https://www.sunpop.cn" target="_blank">Powered by <span>odooApp</span></a>
            </xpath>
        </template>
    </data>
</odoo>