Handle multisite: xls was linked with wrong path, contained the site language
Handle multisite: xls was linked with wrong path, contained the site language

Before:

<?xml-stylesheet type="text/xsl"
href="/grav-develop/de/user/plugins/sitemap/sitemap.xsl"?>

(not valid).
now:

<?xml-stylesheet type="text/xsl"
href="/grav-develop/user/plugins/sitemap/sitemap.xsl"?>

getgrav/grav-plugin-sitemap