fix(bt/example): Use correct struct type

examples/bluetooth/bluedroid/ble/gatt_client/main/gattc_demo.c

@@ -130,7 +130,7 @@ static void gattc_profile_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_
             break;
         }
         ESP_LOGI(GATTC_TAG, "discover service complete conn_id %d", param->dis_srvc_cmpl.conn_id);
-        esp_ble_gattc_search_service(gattc_if, param->cfg_mtu.conn_id, &remote_filter_service_uuid);
+        esp_ble_gattc_search_service(gattc_if, param->dis_srvc_cmpl.conn_id, &remote_filter_service_uuid);
         break;
     case ESP_GATTC_CFG_MTU_EVT:
         if (param->cfg_mtu.status != ESP_GATT_OK){