Add Urdu fake news dataset.
@lhoestq looks like a lot of files were updated... shall I create a new PR? Hi @chaitnayabasava ! you can try rebasing and see if that fixes the number of files changed, otherwise please do open a new PR with only the relevant files and close this one :)  Created a new PR #1230.
closing this one :)
Added Urdu fake news dataset. More information about the dataset can be found <a href="https://github.com/MaazAmjad/Datasets-for-Urdu-news">here</a>.