fixed json handling issue

Author: jeffreyaven

pystackql/stackql.py

@@ -210,7 +210,7 @@ def _run_query(self, query, custom_auth=None, env_vars=None):
 		# local_params.insert(1, shlex.quote(query))
 		script_path = None
 
-		if sys.os.platform == "Windows":
+		if self.platform.startswith("Windows"):
 			# Escape double quotes and wrap in double quotes for Windows
 			escaped_query = query.replace('"', '\\"')  # Escape double quotes properly
 			safe_query = f'"{escaped_query}"'