Can not pass sample codes from README.md. about dataconf

[zifeo]

@ChiahungTai Thanks for the report. The readme is indeed outdated:

• it should have used str or Text as types
• the remote file was not found and did not trigger an error message
  I have created #58 to correct those behaviour.

In the meanwhile, the following should work:

@dataclass
class Example:
    hello: str
    world: str
    foo: List[str]

os.environ['DC_WORLD'] = 'monde'

print(
    dataconf
    .multi
    .url('https://raw.githubusercontent.com/zifeo/dataconf/main/confs/simple.json')
    .env('DC')
    .on(Example)
)

[ChiahungTai]

Thanks for the quick response. :)

[zifeo]

@ChiahungTai 2.1.2 should now raised an error if the source is missing.

[ChiahungTai]

@ChiahungTai 2.1.2 should now raised an error if the source is missing.

I have upgraded the dataconf to 2.1.2.
It works! :)