Fix magic number explanation in filetime.cpp (#10582)
Fix magic number explanation in filetime.cpp (#10582)

89 * 366 + 280 * 365 equals to 134774 (not 134744)
JonHanna/coreclr,cshung/coreclr,botaberg/coreclr,mmitche/coreclr,JosephTremoulet/coreclr,AlexGhiondea/coreclr,wateret/coreclr,James-Ko/coreclr,kyulee1/coreclr,ruben-ayrapetyan/coreclr,yeaicc/coreclr,parjong/coreclr,wateret/coreclr,kyulee1/coreclr,qiudesong/coreclr,JosephTremoulet/coreclr,YongseopKim/coreclr,JosephTremoulet/coreclr,James-Ko/coreclr,yizhang82/coreclr,mmitche/coreclr,russellhadley/coreclr,pgavlin/coreclr,russellhadley/coreclr,yizhang82/coreclr,poizan42/coreclr,qiudesong/coreclr,gkhanna79/coreclr,gkhanna79/coreclr,cshung/coreclr,hseok-oh/coreclr,sagood/coreclr,kyulee1/coreclr,ragmani/coreclr,alexperovich/coreclr,krytarowski/coreclr,hseok-oh/coreclr,yeaicc/coreclr,qiudesong/coreclr,sagood/coreclr,James-Ko/coreclr,yizhang82/coreclr,alexperovich/coreclr,wtgodbe/coreclr,cshung/coreclr,jamesqo/coreclr,krk/coreclr,JonHanna/coreclr,yizhang82/coreclr,yeaicc/coreclr,parjong/coreclr,jamesqo/coreclr,poizan42/coreclr,yizhang82/coreclr,ruben-ayrapetyan/coreclr,mskvortsov/coreclr,dpodder/coreclr,russellhadley/coreclr,cmckinsey/coreclr,yeaicc/coreclr,krk/coreclr,cydhaselton/coreclr,parjong/coreclr,alexperovich/coreclr,rartemev/coreclr,rartemev/coreclr,qiudesong/coreclr,James-Ko/coreclr,botaberg/coreclr,botaberg/coreclr,cmckinsey/coreclr,pgavlin/coreclr,hseok-oh/coreclr,alexperovich/coreclr,AlexGhiondea/coreclr,mmitche/coreclr,yizhang82/coreclr,kyulee1/coreclr,rartemev/coreclr,jamesqo/coreclr,hseok-oh/coreclr,tijoytom/coreclr,ragmani/coreclr,botaberg/coreclr,JonHanna/coreclr,dpodder/coreclr,cmckinsey/coreclr,ragmani/coreclr,mskvortsov/coreclr,rartemev/coreclr,YongseopKim/coreclr,alexperovich/coreclr,wateret/coreclr,gkhanna79/coreclr,rartemev/coreclr,wateret/coreclr,alexperovich/coreclr,krytarowski/coreclr,wtgodbe/coreclr,pgavlin/coreclr,cshung/coreclr,mmitche/coreclr,parjong/coreclr,tijoytom/coreclr,krytarowski/coreclr,krytarowski/coreclr,sagood/coreclr,cydhaselton/coreclr,yeaicc/coreclr,YongseopKim/coreclr,krk/coreclr,jamesqo/coreclr,pgavlin/coreclr,wtgodbe/coreclr,cshung/coreclr,cmckinsey/coreclr,yeaicc/coreclr,JosephTremoulet/coreclr,kyulee1/coreclr,YongseopKim/coreclr,krytarowski/coreclr,gkhanna79/coreclr,ragmani/coreclr,jamesqo/coreclr,gkhanna79/coreclr,JosephTremoulet/coreclr,ragmani/coreclr,krytarowski/coreclr,poizan42/coreclr,tijoytom/coreclr,mskvortsov/coreclr,ruben-ayrapetyan/coreclr,poizan42/coreclr,dpodder/coreclr,yeaicc/coreclr,sagood/coreclr,ruben-ayrapetyan/coreclr,James-Ko/coreclr,sagood/coreclr,AlexGhiondea/coreclr,wateret/coreclr,AlexGhiondea/coreclr,sagood/coreclr,JonHanna/coreclr,mskvortsov/coreclr,wtgodbe/coreclr,russellhadley/coreclr,botaberg/coreclr,russellhadley/coreclr,krk/coreclr,mskvortsov/coreclr,tijoytom/coreclr,ruben-ayrapetyan/coreclr,kyulee1/coreclr,wateret/coreclr,pgavlin/coreclr,JonHanna/coreclr,dpodder/coreclr,wtgodbe/coreclr,cmckinsey/coreclr,qiudesong/coreclr,krk/coreclr,hseok-oh/coreclr,hseok-oh/coreclr,JosephTremoulet/coreclr,krk/coreclr,cmckinsey/coreclr,rartemev/coreclr,cmckinsey/coreclr,cshung/coreclr,YongseopKim/coreclr,botaberg/coreclr,ruben-ayrapetyan/coreclr,mskvortsov/coreclr,tijoytom/coreclr,tijoytom/coreclr,parjong/coreclr,poizan42/coreclr,AlexGhiondea/coreclr,mmitche/coreclr,poizan42/coreclr,wtgodbe/coreclr,dpodder/coreclr,YongseopKim/coreclr,cydhaselton/coreclr,dpodder/coreclr,cydhaselton/coreclr,James-Ko/coreclr,mmitche/coreclr,ragmani/coreclr,qiudesong/coreclr,cydhaselton/coreclr,pgavlin/coreclr,cydhaselton/coreclr,gkhanna79/coreclr,jamesqo/coreclr,JonHanna/coreclr,parjong/coreclr,AlexGhiondea/coreclr,russellhadley/coreclr