fix(framework:skip) Update the description of args for `flower-supern…

…ode` and `flower-client-app` and fix the usage of `args.max_retries` (#3710)

src/py/flwr/client/app.py

@@ -298,7 +298,7 @@ def _on_backoff(retry_state: RetryState) -> None:
     retry_invoker = RetryInvoker(
         wait_gen_factory=exponential,
         recoverable_exceptions=connection_error_type,
-        max_tries=max_retries,
+        max_tries=max_retries + 1 if max_retries is not None else None,
         max_time=max_wait_time,
         on_giveup=lambda retry_state: (
             log(

src/py/flwr/client/supernode/app.py

@@ -345,16 +345,16 @@ def _parse_args_common(parser: argparse.ArgumentParser) -> None:
         "--max-retries",
         type=int,
         default=None,
-        help="The maximum number of times the client will try to connect to the"
-        "server before giving up in case of a connection error. By default,"
+        help="The maximum number of times the client will try to reconnect to the"
+        "SuperLink before giving up in case of a connection error. By default,"
         "it is set to None, meaning there is no limit to the number of tries.",
     )
     parser.add_argument(
         "--max-wait-time",
         type=float,
         default=None,
         help="The maximum duration before the client stops trying to"
-        "connect to the server in case of connection error. By default, it"
+        "connect to the SuperLink in case of connection error. By default, it"
         "is set to None, meaning there is no limit to the total time.",
     )
     parser.add_argument(