Fix a typo in Factory provider docs "service.add_attributes(clent=client)"

[rmk135]

I found a typo in Factory provider docs: https://python-dependency-injector.ets-labs.org/providers/factory.html.
Need to update service.add_attributes(clent=client) -> service.add_attributes(client=client).

[rmk135]

Hey @rajanjha786, many thanks for the help! I have updated a changelog: cc42352.

The fix is in the develop branch now and will be published with the next release.

[rajanjha786]

Thanks, @rmk135
This was my contribution to OS Journey :)