docs: Document the app config setting

Signed-off-by: Joas Schilling <coding@schilljs.com>

docs/settings.md

@@ -115,5 +115,6 @@ Legend:
 | `delete_one_to_one_conversations`    | string<br>`1` or `0`                                             | `0`        | No   | ️      | Whether one-to-one conversations can be left by either participant or should be deleted when one participant leaves                                                                                                                                                              |
 | `enable_matterbridge`                | string<br>`1` or `0`                                             | `0`        | No   | 🖌️    | Whether the Matterbridge integration is enabled and can be configured                                                                                                                                                                                                            |
 | `force_passwords`                    | string<br>`1` or `0`                                             | `0`        | No   | ️      | Whether public chats are forced to use a password                                                                                                                                                                                                                                |
+| `call_end_to_end_encryption`         | string<br>`1` or `0`                                             | `0`        | No   | 🖌️    | Whether clients should end-to-end encrypt streams in calls (Only supported with High-performance backend)                                                                                                                                                                        |
 | `inactivity_lock_after_days`         | int                                                              | `0`        | No   |        | A duration (in days) after which rooms are locked. Calculated from the last activity in the room.                                                                                                                                                                                |
 | `inactivity_enable_lobby`            | string<br>`1` or `0`                                             | `0`        | No   |        | Additionally enable the lobby for inactive rooms so they can only be read by moderators.                                                                                                                                                                                         |