Fix typo Update contribute-overview.mdx

[petryshkaCODE]

Fix Typo in contribute-overview.mdx

Description:

This pull request fixes a typographical error in the contribute-overview.mdx file. The word "calender" was corrected to "calendar."

Changes:

• Corrected "calender" to "calendar" in the contribute-overview.mdx file.

File(s) Modified:

• contribute-overview.mdx

Justification:

Correcting typographical errors ensures that the documentation is professional, clear, and accurate for all contributors.

Checklist:

• [x] Typographical error corrected.
• [x] Documentation is accurate and readable.

Related Issues:

• N/A

Additional Notes:

This fix only involves a documentation update and does not affect the functionality of the code.

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