Small migration guide update (#42510)
* update
* Update MIGRATION_GUIDE_V5.md
Co-authored-by: Lysandre Debut <hi@lysand.re>
* Update MIGRATION_GUIDE_V5.md
Co-authored-by: Lysandre Debut <hi@lysand.re>
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Co-authored-by: Lysandre Debut <hi@lysand.re>
