<?xml version="1.0"?>
<course>
    <id>pl</id>
    <foreignId>artikulate-basic</foreignId>
    <title>ArtiKulate Polish</title>
    <description>TODO</description>
    <language>de</language>
    <units>
    </units>
</course>

<?xml version="1.0"?>
<course>
    <id>pl</id>
    <foreignId>artikulate-basic</foreignId>
    <title>ArtiKulate Polish</title>
    <description>TODO</description>
    <language>pl</language>
    <units>
    </units>
</course>

Fix typo in language ID.
Fix typo in language ID.
