[Doc] Add improved 'ray start --resources' help (ray-project#41009)

This PR clarifies usage of ray start --resources and gives an example of valid usage on Windows.

Signed-off-by: pdmurray <peynmurray@gmail.com>

python/ray/scripts/scripts.py

@@ -2,6 +2,7 @@
 import json
 import logging
 import os
+import platform
 import signal
 import subprocess
 import sys
@@ -386,7 +387,23 @@ def debug(address):
     required=False,
     default="{}",
     type=str,
-    help="a JSON serialized dictionary mapping resource name to resource quantity",
+    help="A JSON serialized dictionary mapping resource name to resource quantity."
+    + (
+        r"""
+
+Windows command prompt users must ensure to double quote command line arguments. Because
+JSON requires the use of double quotes you must escape these arguments as well, for
+example:
+
+    ray start --head --resources="{\"special_hardware\":1, \"custom_label\":1}"
+
+Windows powershell users need additional escaping:
+
+    ray start --head --resources="{\""special_hardware\"":1, \""custom_label\"":1}"
+"""
+        if platform.system() == "Windows"
+        else ""
+    ),
 )
 @click.option(
     "--head",