[DOC] Improve Security Sybil Smart Contract

[s-n-park]

Is your feature request related to a problem? Please describe.
User Request: For the page Smart Contracts Security Sybil: “It just states a problem, but gives no solutions.”Sybil security (feelback)

Describe the solution you'd like
Improved/enhanced documentation of solution to the issue

Additional context
Add any other context or screenshots about the feature request here.