[@types/react-datepicker] fix a definition for renderDayContents (#40217)
[@types/react-datepicker] fix a definition for renderDayContents (#40217)


markogresak/DefinitelyTyped,dsebastien/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,mcliment/DefinitelyTyped,dsebastien/DefinitelyTyped