```ruby
DOC_URL = "https://demarches-simplifiees.gitbook.io/demarches-simplifiees"
LISTE_DES_DEMARCHES_URL = "https://demarches-simplifiees.gitbook.io/demarches-simplifiees/listes-des-demarches"
CGU_URL = "https://demarches-simplifiees.gitbook.io/demarches-simplifiees/cgu"
MENTIONS_LEGALES_URL = "https://demarches-simplifiees.gitbook.io/demarches-simplifiees/cgu#4.-mentions-legales"
```

Make the GitBook URLs depend on DOC_URL
user
```ruby
DOC_URL = "https://demarches-simplifiees.gitbook.io/demarches-simplifiees"
LISTE_DES_DEMARCHES_URL = [DOC_URL, "listes-des-demarches"].join("/")
CGU_URL = [DOC_URL, "cgu"].join("/")
MENTIONS_LEGALES_URL = [CGU_URL, "4.-mentions-legales"].join("#")
```
assistant