chore: update wrong device template

Author: Koenkk

.github/ISSUE_TEMPLATE/wrong_device.yaml

@@ -7,6 +7,9 @@ body:
       attributes:
           value: |
               Only use this if the device is detected as **supported** and is **fully functional** but has a wrong picture, vendor, model or description.
+
+              IMPORTANT: Before submitting this issue, please read the [guide](https://www.zigbee2mqtt.io/advanced/support-new-devices/02_support_new_tuya_devices.html#fixing-tuya-device-detection) on how to fix this yourself.
+              This is usually takes only 5 minutes to do it yourself.
     - type: input
       id: link
       attributes: