Fix(UpgradeAdapter): Fixed Minor Typo

[Belax8]

Just fixed a minor typo.

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• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

What kind of change does this PR introduce? (check one with "x")

[x] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
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Does this PR introduce a breaking change? (check one with "x")

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[x] No

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