One more argument to shift.

Signed-off-by: Dan Schaper <dan.schaper@pi-hole.net>

advanced/Scripts/piholeCheckout.sh

@@ -144,7 +144,7 @@ checkout()
       for e in "${webbranches[@]}"; do echo ":::   $e"; done
       exit 1
     fi
-    checkout_pull_branch "${webInterfaceDir}" "${3}"
+    checkout_pull_branch "${webInterfaceDir}" "${2}"
   else
     echo "::: Requested option \"${1}\" is not available!"
     exit 1