Correct errors in the newly added device.

[hsakoh]

These are based on assumptions about product features, as I do not have detailed knowledge of the actual API or Webhook specifications. The following changes have been made.

• changeParam command for K10+ Pro Combo

  • Remove the waterLevel property. It seems to have been left unchanged when copied from the S10.

• Webhook payload for 4 Air Purifier models

  • Remove the drying property.
  • Modify the description of the mode property to match the StatusAPI. These also seem to have been left unchanged when copied from the Evaporative Humidifier (Auto-refill). Or, does the StatusAPI have a range of 1 to 4, while the Webhook has a range of 1 to 8 (including fan levels)?

[hsakoh]

@Minsheng Could you review this pull request?

[hsakoh]

Include this in #405.