docs: fix typo in distributed caching (#4847)

Co-authored-by: Geoffroy Couprie <apollo@geoffroycouprie.com>

docs/source/configuration/distributed-caching.mdx

@@ -158,7 +158,7 @@ When using the same Redis instance for multiple puposes, the `namespace` option
 
 ### Required to start
 
-When active, the `required_to_start` option will prevent the Router from starting if it cannot connect to Redis. By default, the Router will still start without a connection to Redis, which would result in only using the in-memory cache for APQ and query planning, and entity caching sending the requestsz to subgraphs undisturbed.
+When active, the `required_to_start` option will prevent the Router from starting if it cannot connect to Redis. By default, the Router will still start without a connection to Redis, which would result in only using the in-memory cache for APQ and query planning, and entity caching sending the requests to subgraphs undisturbed.
 
 ### Reset TTL