[Docs] update docs for correct request format

[kailash]

update API docs to reflect the correct request format for https://gis.iudx.org.in/apis#operation/registergisinforequest API.

Correct Format.

{

    "id": "<<resource group/item Id>>",
    "server-url": "URL",
    "server-port": 1234,
    "isSecure": false

}