Get "verified" badge for PyThaiNLP organization on GitHub

[bact]

GitHub provides a "verified" badge for organizations.

PyThaiNLP may like to get one to be displayed on the org landing page:
https://github.com/PyThaiNLP/

Example of the "verified" badge on GitHub organization pages:

https://github.com/apache

https://github.com/eclipse/

https://github.com/rust-lang/

[wannaphong]

@bact Done

[bact]

so quick. thank you!