[cli][ray] update ray cli message (#10823)

doc/source/cluster/slurm.rst

@@ -79,7 +79,7 @@ Starter SLURM script
   redis_password = sys.argv[1]
   num_cpus = int(sys.argv[2])
 
-  ray.init(address=os.environ["ip_head"], redis_password=redis_password)
+  ray.init(address=os.environ["ip_head"], _redis_password=redis_password)
 
   print("Nodes in the Ray cluster:")
   print(ray.nodes())

python/ray/scripts/scripts.py

@@ -584,7 +584,7 @@ def start(node_ip_address, redis_address, address, redis_port, port,
                     cli_logger.print(
                         "ray{}init(address{}{}{})", c.magenta("."),
                         c.magenta("="), c.yellow("'auto'"),
-                        ", redis_password{}{}".format(
+                        ", _redis_password{}{}".format(
                             c.magenta("="),
                             c.yellow("'" + redis_password + "'"))
                         if redis_password else "")

python/ray/tests/test_cli_patterns/test_ray_start.txt

@@ -10,7 +10,7 @@ Next steps
 
   Alternatively, use the following Python code:
     import ray
-    ray\.init\(address='auto', redis_password='.+'\)
+    ray\.init\(address='auto', _redis_password='.+'\)
 
   If connection fails, check your firewall settings and network configuration.