Docs: Payload Text/Media is missing the `Message` key

[PromiseFru]

In the Payload Text/Media section of the documentation, the payload schema is missing a Message key.

Current Payload Schema

{
    "IsContact": true|false,
    "Type": "",
    "From": "",
    "To": "",
    "Media": {
        "Content": bytes,
        "Info": {
            "Size": 0,
            "MimeType": "",
            "Width": 0,
            "Height": 0,
            "BlurHash": ""
        }
    }
}

Expected Payload Schema

The payload should include a Message key, e.g.:

{
    "IsContact": true|false,
    "Type": "",
    "From": "",
    "To": "",
    "Message": "",
    "Media": {
        "Content": bytes,
        "Info": {
            "Size": 0,
            "MimeType": "",
            "Width": 0,
            "Height": 0,
            "BlurHash": ""
        }
    }
}