Add public delegation to governance page

[scott-klaytn]

Proposed changes

• Consolidate the concept of public delegation to Governance page

Types of changes

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• Minor Issues and Typos
• Major Content Contribution
• Others

Checklist

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• I have read the CONTRIBUTING GUIDELINES
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• I have added necessary documentation (if appropriate)
• Any dependent changes have been merged and published in downstream modules

Related issues

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Further comments

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