Updated lang.json

[ps-19]

source: https://www.cs.cmu.edu/~biglou/resources/bad-words.txt

I guess their is need of some minor changes. Some usual words are also included into bad words.

[Hashen110]

In your commit, there are words that are not bad words.

example- africa, african, angry, burn

[ps-19]

I took data from given url. I will amend it after my class mid-sems.