Mispell and return instead of raise Exception on status different then 200

[dk-WZFinTech]

This line:

python-exchangeratesapi/exchangeratesapi/api.py

Line 102 in 86eed44

return resp.json(['error'])

has bad construction should be:

      return resp.json()['error']

but IMO this should be change to:

        resp = requests.get(url)
        if resp.status_code == 200:
            return resp.json()
        else:
            error = resp.json()['error']
            raise Exception(f"Web status: {resp.status_code} - {error}")