minor

README.md

@@ -13,7 +13,8 @@ It is meant to be used in conjunction with Geant ACME infrastructure
 you can run the tool as following:
 
 ```bash
-acme-downloader --vault-token=<VAULT-TOKEN> --redis-token=<REDIS_TOKEN> --cert-name=foo-ev-cert.geant.org --team-name=swd
+acme-downloader --vault-token=<VAULT-TOKEN> --redis-token=<REDIS_TOKEN> \
+--cert-name=foo-ev-cert.geant.org --team-name=swd
 ```
 
  or check all the option using `--help`: