update github description

[Ablesius]

The description reads "A Hacker News lookalike written in Python/Django, powering https://news.python.sc https://news.python.sc", which is probably due to the two fields "Description" and "Website" right there at the top of the github repository (see screenshot:
)

I'd suggest only putting the link into the "Website" section and updating the Description to "A Hacker News lookalike written in Python/Django"