docs(admin): warn that disabling bruteforcesettings app does not stop BFP

The protection is built into Nextcloud Server core and is always active.
Disabling the app only removes the ability to manage brute force settings
from the Web interface.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Signed-off-by: skjnldsv <skjnldsv@protonmail.com>

Author: skjnldsv

admin_manual/configuration_server/bruteforce_configuration.rst

@@ -91,8 +91,11 @@ addresses and ranges to exempt from brute force protection.
 Additional enhancements may be made in the future, within this app and/or in combination with Nextcloud Server for
 additional monitoring or behavior adjustments related to brute force protection.
 
-.. warning:: Disabling the ``bruteforcesettings`` app does **not** disable brute force protection
-   - it merely removes your ability to adjust brute force related settings from the Web interface.
+.. warning::
+
+   Disabling the ``bruteforcesettings`` app does **not** disable brute force protection.
+   The protection is built into Nextcloud Server core and is always active. Disabling the app
+   only removes the ability to manage brute force settings from the Web interface.
 
 .. danger::