📝(compose) Update deprecated USER_OIDC_FIELD* variables in example

Signed-off-by: Luca Weiss <luca@lucaweiss.eu>

Author: z3ntu

env.d/production.dist/backend

@@ -43,8 +43,8 @@ OIDC_RP_CLIENT_ID=<client_id>
 OIDC_RP_CLIENT_SECRET=<client secret>
 OIDC_RP_SIGN_ALGO=RS256
 OIDC_RP_SCOPES="openid email"
-#USER_OIDC_FIELD_TO_SHORTNAME
-#USER_OIDC_FIELDS_TO_FULLNAME
+#OIDC_USERINFO_SHORTNAME_FIELD
+#OIDC_USERINFO_FULLNAME_FIELDS
 
 LOGIN_REDIRECT_URL=https://${DOCS_HOST}
 LOGIN_REDIRECT_URL_FAILURE=https://${DOCS_HOST}