[Dokuwiki] Remove playground pages at startup

pica-dokuwiki/run.sh

@@ -13,7 +13,7 @@ echo "Remove old files..."
 grep -Ev '^($|#)' /var/www/html/data/deleted.files | xargs -n 1 rm -vf
 
 echo "Remove wiki tutorial pages..."
-rm -rf /var/www/html/data/pages/wiki
+rm -rf /var/www/html/data/pages/{wiki,playground}
 
 echo "Add additional MIME types..."
 cp /mime.local.conf /var/www/html/conf/