replace comment of function (#39284)
replace comment of function (#39284)

comment of 'isAtMost' was copied from 'isAtLeast' and does not reflect the behaviour of the function. See https://github.com/chaijs/chai/blob/master/chai.js#L4481
georgemarshall/DefinitelyTyped,dsebastien/DefinitelyTyped,markogresak/DefinitelyTyped,georgemarshall/DefinitelyTyped,dsebastien/DefinitelyTyped,mcliment/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped