Adapt docs to new Traefik environment variables variable name

Related to:

- d96ce10d57
- https://github.com/mother-of-all-self-hosting/ansible-role-traefik/pull/6
- https://github.com/mother-of-all-self-hosting/ansible-role-traefik/issues/5

docs/configuring-playbook-ssl-certificates.md

@@ -117,7 +117,7 @@ traefik_config_certificatesResolvers_acme_dnsChallenge_provider: "cloudflare"
 traefik_config_certificatesResolvers_acme_dnsChallenge_delayBeforeCheck: 60
 traefik_config_certificatesResolvers_acme_dnsChallenge_resolvers:
   - "1.1.1.1:53"
-traefik_environment_variables_additional_variables: |
+traefik_environment_variables: |
   CF_API_EMAIL=redacted
   CF_ZONE_API_TOKEN=redacted
   CF_DNS_API_TOKEN=redacted

docs/howto-srv-server-delegation.md

@@ -80,7 +80,7 @@ traefik_configuration_extension_yaml: |
         storage: {{ traefik_config_certificatesResolvers_acme_storage | to_json }}
 
 # 2. Configure the environment variables needed by Rraefik to automate the ACME DNS Challenge (example for Cloudflare)
-traefik_environment_variables_additional_variables: |
+traefik_environment_variables: |
   CF_API_EMAIL=redacted
   CF_ZONE_API_TOKEN=redacted
   CF_DNS_API_TOKEN=redacted
@@ -158,7 +158,7 @@ traefik_configuration_extension_yaml: |
 traefik_certResolver_primary: "dns"
 
 # Configure the environment variables needed by Traefik to automate the ACME DNS Challenge (example for Cloudflare)
-traefik_environment_variables_additional_variables: |
+traefik_environment_variables: |
   CF_API_EMAIL=redacted
   CF_ZONE_API_TOKEN=redacted
   CF_DNS_API_TOKEN=redacted