[DRAFT] ENG-17238 - Enhance "Enabling NVIDIA GPUs" with further information within the prereqs and verification section

[chtyler]

…en enabling nvidia gpus

Description

To make the "Enabling NVIDIA GPUs" module a little more consistent with the other accelerator modules, information on the Node Feature Discovery (NFD) and Kernel Module Management (KMD) have been added to the module in the "Verification" section. In addition, the "Prerequisite" section has been enhanced to include information that the GPU itself must be present in the deployment before the accelerator can be enabled.

How Has This Been Tested?

Merge criteria:

• The commits are squashed in a cohesive manner and have meaningful messages.
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• The developer has manually tested the changes and verified that the changes work