OS Support not updated in documentation.

[dabrenes]

The documentation for the Python XNET API is not updated as to which OS it supports (https://nixnet.readthedocs.io/en/latest/). It only says Windows, and on the last release, it says that Linux support was added but did not get into details. According to a dev it supports the same OS as the readme says https://www.ni.com/pdf/manuals/ni-xnet-linux-2022-q3.html

• OS: Linux
• Python version: N/A
• NI-XNET version: N/A