chore: update readme [skip ci]

README.md

@@ -187,7 +187,7 @@ argument) or via environment variables. Here is an overview of all options.
 | `security.expose_metrics` /<br> `WAKAPI_EXPOSE_METRICS`                      | `false`                                          | Whether to expose Prometheus metrics under `/api/metrics`                                                                                                                       |
 | `security.trusted_header_auth` /<br> `WAKAPI_TRUSTED_HEADER_AUTH`            | `false`                                          | Whether to enable trusted header authentication for reverse proxies (see [#534](https://github.com/muety/wakapi/issues/534)). **Use with caution!**                             |
 | `security.trusted_header_auth_key` /<br> `WAKAPI_TRUSTED_HEADER_AUTH_KEY`    | `Remote-User`                                    | Header field for trusted header authentication. **Caution:** proxy must be configured to strip this header from client requests!                                                |
-| `security.trust_reverse_proxy_ips` /<br> `WAKAPI_TRUST_REVERSE_PROXY_IPS`    | -                                                | Comma-separated list IPv4 or IPv6 addresses of reverse proxies to trust to handle authentication.                                                                               |
+| `security.trust_reverse_proxy_ips` /<br> `WAKAPI_TRUST_REVERSE_PROXY_IPS`    | -                                                | Comma-separated list of IPv4 or IPv6 addresses or CIDRs of reverse proxies to trust to handle authentication (e.g. `172.17.0.1`, `192.168.0.0/24`, `[::1]`).                    |
 | `security.signup_max_rate` /<br> `WAKAPI_SIGNUP_MAX_RATE`                    | `5/1h`                                           | Rate limiting config for signup endpoint in format `<max_req>/<multiplier><unit>`, where `unit` is one of `s`, `m` or `h`.                                                      |
 | `security.login_max_rate` /<br> `WAKAPI_LOGIN_MAX_RATE`                      | `10/1m`                                          | Rate limiting config for login endpoint in format `<max_req>/<multiplier><unit>`, where `unit` is one of `s`, `m` or `h`.                                                       |
 | `security.password_reset_max_rate` /<br> `WAKAPI_PASSWORD_RESET_MAX_RATE`    | `5/1h`                                           | Rate limiting config for password reset endpoint in format `<max_req>/<multiplier><unit>`, where `unit` is one of `s`, `m` or `h`.                                              |