[I-03] Typo in parameter name '_upcommingEpoch'

[softstackio]

Likelihood: High

Description
In the KeyGenHistory contract, there is a typo in the parameter name '_upcommingEpoch' used in the writePart and writeAcks functions. The correct spelling should be '_upcomingEpoch'.

Recommendation:
Correct the spelling of '_upcommingEpoch' to '_upcomingEpoch' in both the writePart and writeAcks functions, as well as in the onlyUpcomingEpoch modifier (which should also be renamed). This will improve code consistency and readability.