fix: several typos

[crStiv]

What changed? Why?

This pull request addresses several minor typos and grammatical errors across the repository:

1. Corrected a grammatical error in .eslintrc.js to improve clarity in comments.
2. Fixed a typo in .gitignore to align with standard usage.
3. Adjusted phrasing in CONTRIBUTING.md for grammatical accuracy and consistency.

These changes improve the readability and professionalism of the codebase and documentation.

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Notes to reviewers

• These are minor, non-functional changes focused solely on correcting text.
• No logic or functional components of the codebase have been altered.

Please review the corrections to ensure consistency with the project's tone and style.

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How has it been tested?

• Reviewed the modified files to ensure that the corrections align with the context and do not introduce any unintended changes.
• Verified that these changes are purely textual and do not affect the functionality of the project.

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Additional Information:

• All edits have been thoroughly checked for accuracy.
• Allowing maintainers to make further changes to refine if necessary.

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🟡 Heimdall Review Status

Requirement	Status	More Info
Reviews	🟡 0/1	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 0 Sum 1