fix typo

srv/fai/config/class/50-host-classes

@@ -9,7 +9,7 @@
 if [ ! -n "$PORCH_URL" ]
 if [ ! -n "$PORCH_URL" ]
 then
 then
     echo "PORCH_URL is not set. Let's set it."
     echo "PORCH_URL is not set. Let's set it."
-    PORCH_URL=$(echo $FAI_CONFIG_SRC |cut -d'/' -f1,2,3)a
+    PORCH_URL=$(echo $FAI_CONFIG_SRC |cut -d'/' -f1,2,3)
 fi
 fi
 OS=$(/usr/bin/curl $PORCH_URL/api/fai/class/$HOSTNAME)
 OS=$(/usr/bin/curl $PORCH_URL/api/fai/class/$HOSTNAME)