Fix typo in variable name in CustomPalette and CustomContextPad

[kr4chinin]

Proposed Changes

Fix typo in variable name SUITABILITY_SCORE_AVERAGE in CustomPalette and CustomContextPad files. Previously one letter in AVERAGE was missing.

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• Brief textual description of the changes present
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• Related issue linked via Closes {LINK_TO_ISSUE} or Related to {LINK_TO_ISSUE}

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[nikku]

Thanks for your contribution. We apprechiate it 🙂