Update NBA stats table CSS selector

[vgeek]

This changes CSS selector for NBA team names/abbreviations.

closes #691

[jakesjordan00]

Still does not work for me unfortunately

[vgeek]

Can you confirm the actual error? Try changing line 60 in openers.py from
raise HTTPError(resp.url, resp.status_code, resp.reason, resp.headers, None)
to
raise Exception(resp.status_code)

and confirm that you're not getting a 429 error for rate limiting or some other error.