Fix: Correct Typographical Errors in Documentation

[vipocenka]

This pull request fixes multiple typographical errors in various documentation files to improve clarity and maintain consistency.

Key Changes:

• Corrected "per height" to "per-height" in 02-integration.md.
• Updated phrasing of "a IBC-client-breaking" to "an IBC-client-breaking" across multiple files.
• Fixed "unidirectional" typo in 10-roadmap.md.
• Standardized phrasing of "4 step process" to "4-step process" in 05-v3-to-v4.md.

Affected Files:

1. docs/docs/01-ibc/02-integration.md
2. docs/docs/01-ibc/05-upgrades/00-intro.md
3. docs/versioned_docs/version-v4.6.x/01-ibc/05-upgrades/00-intro.md
4. docs/versioned_docs/version-v5.4.x/01-ibc/05-upgrades/00-intro.md
5. docs/versioned_docs/version-v6.3.x/01-ibc/05-upgrades/00-intro.md
6. docs/versioned_docs/version-v6.3.x/04-migrations/05-v3-to-v4.md
7. docs/versioned_docs/version-v7.8.x/01-ibc/05-upgrades/00-intro.md
8. docs/versioned_docs/version-v8.5.x/01-ibc/05-upgrades/00-intro.md
9. docs/versioned_docs/version-v8.5.x/01-ibc/10-roadmap.md

Resolves:

• Closes #XXXX (replace with issue ID if applicable).

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Checklist

• Targeted PR against the correct branch.
• Reviewed and updated relevant documentation (docs/).
• Provided a conventional commit message.
• Re-reviewed Files changed to ensure accuracy.
• Confirmed alignment with repository contribution guidelines.

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Additional Notes

• No API-breaking changes introduced.
• Changes are limited to documentation for clarity and readability improvements.

[damiannolan]

Thanks!