add maithili language to readme metadata

Update README.md

Add Maithili language

Add Nepali, marathi, Bhojpuri in "language" field

Add Marathi, Bhojpuri, Nepali to the configs at once

Update README.md

Update README.md

Delete Bhojpuri from configs [for testing]

Update README.md

Update README.md

Update README.md

Add marathi and bhojpuri

Fix metadata subset errors

Add proper subsets in metadata

Update README.md

Add license from Wikipedia dataset.

Update README.md

Update README.md

Create README.md