Fix typos in documentation and code comments

[Dimitrolito]

This pull request addresses several typographical errors and improves the clarity of documentation and code comments throughout various files. Below is a summary of the changes made:

1. Fixed hyphenation in the phrase "up-to-date" in the CONTRIBUTING.md file.
2. Corrected "end-to-end" spelling in recommended-workflow.md for better readability.
3. Replaced "todos" with "to-dos" in recommended-workflow.md, following the proper grammatical rule for compound nouns.
4. Fixed missing article issue in the phrase "a field elements" in SP1VerifierGroth16.txt and SP1VerifierPlonk.txt.
5. Fixed the use of "emit events" to "to emit events" in CHANGELOG.md.
6. Corrected the plural noun usage in SP1Verifier contract comments from "field elements" to properly reflect grammar.

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Motivation:

The changes aim to improve the clarity and correctness of the documentation and comments. These minor fixes contribute to maintaining consistency and readability across the codebase.

Solution:

• Fixed common typos and added missing hyphens in compound adjectives.
• Ensured proper grammatical structure in the documentation and code comments.

PR Checklist:

• Added Tests
• Added Documentation
• Breaking changes