Update distributed-caching.mdx (#5716)

docs/source/configuration/distributed-caching.mdx

@@ -150,7 +150,7 @@ The `ttl` option defines the default global expiration for Redis entries. For AP
 
 ### Namespace
 
-When using the same Redis instance for multiple puposes, the `namespace` option defines a prefix for all the keys defined by the router.
+When using the same Redis instance for multiple purposes, the `namespace` option defines a prefix for all the keys defined by the router.
 
 ### TLS
 
@@ -162,4 +162,4 @@ When active, the `required_to_start` option will prevent the router from startin
 
 ### Reset TTL
 
-When this option is active, accessing a cache entry in Redis will reset its expiration.
+When this option is active, accessing a cache entry in Redis will reset its expiration.