doc: Glossary update

[nejraselimovic]

Summary

Closes #1021

Checklist

• [x] Scope: The referenced issue is addressed, there are no unrelated changes.
• [x] Run Locally: Verified that the docs build using make server, posted screenshots, verified external links. Test with HUGO_PARAMS_SEARCH_ENABLED=true if style changes will affect the search bar.
• [ ] New Features Marked: Documentation for new features is marked using the new-in-version shortcode, according to the guidelines in CONTRIBUTING.
• [x] Style Guidelines: Documentation obeys style guidelines in CONTRIBUTING.
• [x] Commits: Commit messages follow guidelines in CONTRIBUTING, there are no fixup commits left.

[KrishnaIyer]

@nejraselimovic: Can you rebase and update this PR please?