Updated docs

Author: vladvildanov

docs/resp3_features.rst

@@ -100,8 +100,8 @@ CacheImpl should implement a `CacheInterface` specified in `redis.cache` package
 
 Explicit disconnect
 
-It's important to call `disconnect()` or `disconnect_connection_pools()` in case of Cluster to properly close the connection to server.
+It's important to call `close()` to properly close the connection to server.
 For caching purposes, we're using a separate thread that performs health checks with configurable interval and it relies on
-`disconnect()` or `disconnect_connection_pools()` to be called before the shutdown.
+`close()` to be called before the shutdown.
 
 More robust documentation soon will be available at `official Redis documentation <https://redis.io/docs/latest/>`_.