Detail to Removing Physical NIC

[ajpri]

Added some detail to the remove physical NIC section. Based on personal experience removing a NIC for the first time in my Home Lab, adding some verbosity might assist other users like myself.

Before submitting the pull request, you must agree with the following statements by checking both boxes with a 'x'.

• "I accept that my contribution is placed under the CC BY-SA 2.0 license [1]."
• "My contribution complies with the Developer Certificate of Origin [2]."

[1] https://creativecommons.org/licenses/by-sa/2.0/
[2] https://docs.xcp-ng.org/project/contributing/#developer-certificate-of-origin-dco

Signed-off-by: Austin Pritchett austin@pritchett.info

[olivierlambert]

Thanks for your contribution! Only very minor changes to do 👍

[olivierlambert]

Your change is now available: https://docs.xcp-ng.org/networking/#remove-a-physical-nic

Thanks for your contribution!