New translations: class.xml (Luxembourgish)

translation/dest/class/lb-LU.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-  <string name="lichessClasses" comment="Lichess Classes are a feature that lets a teacher create virtual classes and check out students' progress.&#10;&#10;This text used to be &quot;Lichess Classes&quot;, which has since been shortened to classes.">Coursen</string>
+  <string name="lichessClasses">Coursen</string>
   <string name="features">Funktiounen</string>
   <string name="freeForAllForever">100 % gratis fir jiddereen, fir ëmmer, ouni Reklammen oder Trackeren</string>
   <string name="applyToBeLichessTeacher">Bewerb dech als Lichess-Enseignant</string>