docs: fix admonition title and punctuation nvidia.md

[36conaN]

Type

• [x] Rewrite already written documentation.
• [ ] Add/remove new pages.

Questions

• [ ] Did you preview on your local machine beforehand?
• [x] Did you follow our commit handbook?
• [x] Did you read the Atlas Contribution Guidelines?
• [x] Did you commit to the dev branch and not master?

Describe your pull request

Fixed punctuation and the admonition title not displaying properly.

[Xyueta]

Thanks again.