Update typo

Author: alexander-schranz

components/cache/adapters/redis_adapter.rst

@@ -205,7 +205,7 @@ Configuring Redis
 ~~~~~~~~~~~~~~~~~
 
 When redis is used as cache its recommended to configure the `maxmemory` and `maxmemory-policy`
-read more about this dopic in the offical `Redis LRU Cache Documentation`_. Normally the redis
+read more about this topic in the offical `Redis LRU Cache Documentation`_. Normally the redis
 config can be found int `/etc/redis/redis.conf`. The `maxmemory` depend on the usage of the cache
 to low it could kickout things which could be still important, to high could end in using too
 much memory: