Update config builder to include okx for futures

config_examples/config_full.example.json

@@ -21,7 +21,7 @@
     "ignore_roi_if_buy_signal": false,
     "ignore_buying_expired_candle_after": 300,
     "trading_mode": "spot",
-    // "margin_mode": "isolated",
+    "margin_mode": "",
     "minimal_roi": {
         "40":  0.0,
         "30":  0.01,

freqtrade/commands/build_config_commands.py

@@ -124,7 +124,7 @@ def ask_user_config() -> Dict[str, Any]:
             "message": "Do you want to trade Perpetual Swaps (perpetual futures)?",
             "default": False,
             "filter": lambda val: 'futures' if val else 'spot',
-            "when": lambda x: x["exchange_name"] in ['binance', 'gateio'],
+            "when": lambda x: x["exchange_name"] in ['binance', 'gateio', 'okx'],
         },
         {
             "type": "autocomplete",