Fix contributors list in README.md

[Virtual4087]

Clicking on a contributors profile should redirect the user to the contributors profile.

Note:- Since this is a small issue, you can open a pr without being assigned. The first pr with the necessary changes will get merged.

[vijay-varadarajan]

Hi I have completed the above task and made a pull request. Please consider adding hacktoberfest-accepted label to my pull request.