Fix typo MIGRATING.md

[MonkeyKing44]

Description

This pull request fixes a typo in the MIGRATING.md file:

• Corrected "Lifetime ellision" to "Lifetime elision" in the section titled "Lifetime elision in a contract's impl block not supported."

Changes Made

• File Modified: MIGRATING.md
  • Fixed the typo in the documentation to improve clarity and professionalism.

Rationale

Correct spelling in documentation ensures better readability and reflects the repository's quality standards.

Checklist

• Verified that the change is minor and does not affect functionality.
• Reviewed the contributing guidelines to ensure compliance.

Notes

• Contributions adhere to the repository's contributing guidelines.
• Allowing edits by maintainers for any required adjustments.

Feel free to suggest any additional edits or changes!