fix: typos and apostrophe formatting in documentation

[vtjl10]

This PR fixes several minor text issues across documentation files:

• Corrects spelling of "immediately" in sunset announcement
• Fixes "specific" typo in IPFS documentation
• Standardizes apostrophe usage in character file documentation

No content changes, only formatting and spelling corrections.

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Latest commit: 24251d8

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[vtjl10]

@theBeardA