DOC-12637 Fix redocly plugins

[osfameron]

These crashed when description was missing, so add defaulting/logic to fix. Enable the excise-rbac for the other APIs for the *-capella targets.

DOC-12637

Describe your PR here...

• Use bullet points if there's more than one thing changed

Pre-review checklist

• Removed debug logging (fmt.Print, log.Print, ...)
• Logging sensitive data? Make sure it's tagged (e.g. base.UD(docID), base.MD(dbName))
• Updated relevant information in the API specifications (such as endpoint descriptions, schemas, ...) in docs/api

Dependencies (if applicable)

• Link upstream PRs
• Update Go module dependencies when merged

Integration Tests

• GSI=true,xattrs=true https://jenkins.sgwdev.com/job/SyncGateway-Integration/000/

[github-actions]

Redocly previews

• Admin API
• Public API
• Metric API
• Diagnostic API

[osfameron]

From @torcolvin :

info.title should be modified for public-capella
looking now