docs: trusted_proxies support IPv6 ranges

Support for IPv6 ranges was added by #32615

Signed-off-by: Daniel Kesselberg <mail@danielkesselberg.de>

config/config.sample.php

@@ -669,16 +669,16 @@
  * and a maximum time for trash bin retention.
  *
  * Minimum time is the number of days a file will be kept, after which it
- * _may be_ deleted. A file may be deleted after the minimum number of days 
- * is expired if space is needed. The file will not be deleted if space is 
- * not needed. 
+ * _may be_ deleted. A file may be deleted after the minimum number of days
+ * is expired if space is needed. The file will not be deleted if space is
+ * not needed.
  *
  * Whether "space is needed" depends on whether a user quota is defined or not:
  *
- *  * If no user quota is defined, the available space on the Nextcloud data 
+ *  * If no user quota is defined, the available space on the Nextcloud data
  *    partition sets the limit for the trashbin
  *    (issues: see https://github.com/nextcloud/server/issues/28451).
- *  * If a user quota is defined, 50% of the user's remaining quota space sets 
+ *  * If a user quota is defined, 50% of the user's remaining quota space sets
  *    the limit for the trashbin.
  *
  * Maximum time is the number of days at which it is _guaranteed
@@ -847,7 +847,7 @@
 'check_for_working_htaccess' => true,
 
 /**
- * In rare setups (e.g. on Openshift or docker on windows) the permissions check
+ * In rare setups (e.g. on Openshift or Docker on Windows) the permissions check
  * might block the installation while the underlying system offers no means to
  * "correct" the permissions. In this case, set the value to false.
  *
@@ -2005,9 +2005,7 @@
  * - IPv4 addresses, e.g. `192.168.2.123`
  * - IPv4 ranges in CIDR notation, e.g. `192.168.2.0/24`
  * - IPv6 addresses, e.g. `fd9e:21a7:a92c:2323::1`
- *
- * _(CIDR notation for IPv6 is currently work in progress and thus not
- * available as of yet)_
+ * - IPv6 ranges in CIDR notation, e.g. `2001:db8:85a3:8d3:1319:8a20::/95`
  *
  * When an incoming request's `REMOTE_ADDR` matches any of the IP addresses
  * specified here, it is assumed to be a proxy instead of a client. Thus, the