fix(docs): removed Function Group APIs resource and made edits to tit…

[FelixNicolaeBucsa]

…les in APIs

Proposed Changes

[This PR remove the Function Group APIs page from APIs and renames Titles in same page but for AI Engine instead of DeltaV.]

Linked Issues

PR840 PR842

Types of changes

What type of change does this pull request make (put an x in the boxes that apply)?

• [x] Content update.
• [x] Bug fix (non-breaking change that fixes an issue).
• [ ] New feature added (non-breaking change that adds functionality).
• [ ] Breaking change (fix or feature that would cause existing functionality to stop working as expected).
• [ ] Something else (e.g., tests, scripts, example, deployment, infrastructure).

Checklist

Put an x in the boxes that apply:

• [x] I have read the CONTRIBUTING guide
• [x] Checks and tests pass locally

Further comments

[if this is a relatively large or complex change, kick off a discussion by explaining why you chose the solution you did, what alternatives you considered, etc...]