Obsolete URL in Readme.rst file for development documentation

[rohitjain00]

I am trying to see the development documentation for in the root directory Readme.rst file but this gives me an 404 file not found error.

[rohitjain00]

Turns out the link was not obsolete. I think this was some problem with my internet connection. Thanks for closing the issue.

[bashtage]

It was not when you opened it, but it is after I fixed it.