Review redhat-documentation/supplementary-style-guide accept.txt for inclusion in Vale rules

[aireilly]

A lot of the terms in redhat-documentation/supplementary-style-guide accept.txt could be added to our Spelling.yml rule or other similar rules.

https://github.com/redhat-documentation/supplementary-style-guide/blob/main/.vale/styles/config/vocabularies/SSG/accept.txt