Fix typing for address_remap (fixes #3234) (#3235)

The address_remap callback received a tuple with the host and the port.
Make this clear in the typing hints.

redis/asyncio/cluster.py

@@ -275,7 +275,7 @@ def __init__(
         ssl_min_version: Optional[ssl.TLSVersion] = None,
         ssl_ciphers: Optional[str] = None,
         protocol: Optional[int] = 2,
-        address_remap: Optional[Callable[[str, int], Tuple[str, int]]] = None,
+        address_remap: Optional[Callable[[Tuple[str, int]], Tuple[str, int]]] = None,
         cache_enabled: bool = False,
         client_cache: Optional[AbstractCache] = None,
         cache_max_size: int = 100,
@@ -1152,7 +1152,7 @@ def __init__(
         startup_nodes: List["ClusterNode"],
         require_full_coverage: bool,
         connection_kwargs: Dict[str, Any],
-        address_remap: Optional[Callable[[str, int], Tuple[str, int]]] = None,
+        address_remap: Optional[Callable[[Tuple[str, int]], Tuple[str, int]]] = None,
     ) -> None:
         self.startup_nodes = {node.name: node for node in startup_nodes}
         self.require_full_coverage = require_full_coverage

redis/cluster.py

@@ -506,7 +506,7 @@ def __init__(
         read_from_replicas: bool = False,
         dynamic_startup_nodes: bool = True,
         url: Optional[str] = None,
-        address_remap: Optional[Callable[[str, int], Tuple[str, int]]] = None,
+        address_remap: Optional[Callable[[Tuple[str, int]], Tuple[str, int]]] = None,
         **kwargs,
     ):
         """
@@ -1347,7 +1347,7 @@ def __init__(
         lock=None,
         dynamic_startup_nodes=True,
         connection_pool_class=ConnectionPool,
-        address_remap: Optional[Callable[[str, int], Tuple[str, int]]] = None,
+        address_remap: Optional[Callable[[Tuple[str, int]], Tuple[str, int]]] = None,
         **kwargs,
     ):
         self.nodes_cache = {}