Update jettons.json

[donkeyton]

Please make sure you change the original .yaml fields in the accounts/, Collections/ or jettons/ directories and leave the auto-generated .json files in the repository root alone. Also please make sure that you do not use ton.api links in your pull request.
Example pull request:

name: Donkeyton
description: www.donkeyton.org swap in: ston.fi telegram bot : https://t.me/donkeyton https://tonscan.org/jetton/EQBh0GTe1QrRDfBb3zF_5131ykR64T0y9aIy2LygDt0iWUNx#holders DonkeyTon with the legend of .......... has joined the Ton Chain and cryptocurrency. Upgrading projects are coming soon.... Coming soon....
image: "https://i.postimg.cc/GpYnCdBP/3.jpg"
address: EQBh0GTe1QrRDfBb3zF_5131ykR64T0y9aIy2LygDt0iWUNx
symbol: DONT
websites:
  - "https://donkeyton.org"
social:
  - "https://t.me/donkeyton"