Merge pull request #14949 from nextcloud/backport/14907/stable33

[stable33] fix(admin): restore proper anchor IDs for APCu, Redis and Memcached sections

Author: skjnldsv

admin_manual/configuration_server/caching_configuration.rst

@@ -22,11 +22,11 @@ every time they are called. PHP bundles the Zend OPcache in core since version
 caching backends, so you can choose the type of memcache that best fits your
 needs. The supported caching backends are:
 
-* `APCu <https://pecl.php.net/package/APCu>`_, APCu 4.0.6 and up required.
+* `APCu <https://pecl.php.net/package/APCu>`__, APCu 4.0.6 and up required.
    A local cache for systems.
-* `Redis <http://redis.io/>`_, server 4.0.0 and up required.
+* `Redis <http://redis.io/>`__, server 4.0.0 and up required.
    For local and distributed caching, as well as transactional file locking.
-* `Memcached <https://www.memcached.org/>`_
+* `Memcached <https://www.memcached.org/>`__
    For distributed caching.
 
 Data caches, or memcaches, must be explicitly configured in Nextcloud by installing
@@ -102,7 +102,6 @@ Additional notes for Redis vs. APCu on memory caching
 APCu is faster at local caching than Redis. If you have enough memory, use APCu for Memory Caching
 and Redis for File Locking. If you are low on memory, use Redis for both.
 
-
 APCu
 ----
 
@@ -318,8 +317,7 @@ prevent session corruption when using Redis as your session handler: ::
 More information on configuration of phpredis session handler can be found on the
 `PhpRedis GitHub page <https://github.com/phpredis/phpredis>`_
 
-..  _install_redis_label:
-
+.. _install_redis_label:
 
 Memcached
 ---------