fix register new script

cropswap-register-new.sh

@@ -28,7 +28,7 @@ for group in cropswap{,-members}; do
 
 	for email in "${!SIGNUP[@]}"; do
 		set -x
-		"${SCRIPTDIR}/cropswap-register.sh" "${group}@shandan.one" "${signup["$email"]}" "$email" NONE
+		"${SCRIPTDIR}/cropswap-register.sh" "${group}@shandan.one" "${SIGNUP["$email"]}" "$email" NONE
 		set +x
 	done
 done