docs: fix spelling errors in documentation and code

[kilavvy]

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Description:
This pull request corrects several typos and improves the wording in the following documentation files:

• Architecture overview announcement
• CLI Hosting guide
• Vitalik Blogmaker guide

Improvements:

• Fixed spelling errors (e.g., "accesible" → "accessible", "sucessfully" → "successfully", "relevent" → "relevant")
• Enhanced clarity and consistency in the text

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[changeset-bot]

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Latest commit: 5598e7e

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[kilavvy]

@punkbit

[kilavvy]

@punkbit

[kilavvy]

@punkbit