Cleanup documentation for date/time functions
Cleanup documentation for date/time functions

smartnews/presto,treasure-data/presto,electrum/presto,11xor6/presto,hgschmie/presto,dain/presto,Praveen2112/presto,martint/presto,treasure-data/presto,losipiuk/presto,electrum/presto,hgschmie/presto,losipiuk/presto,ebyhr/presto,Praveen2112/presto,martint/presto,ebyhr/presto,erichwang/presto,treasure-data/presto,11xor6/presto,Praveen2112/presto,smartnews/presto,dain/presto,erichwang/presto,11xor6/presto,smartnews/presto,electrum/presto,treasure-data/presto,losipiuk/presto,erichwang/presto,smartnews/presto,Praveen2112/presto,losipiuk/presto,martint/presto,Praveen2112/presto,electrum/presto,losipiuk/presto,hgschmie/presto,martint/presto,erichwang/presto,erichwang/presto,electrum/presto,hgschmie/presto,treasure-data/presto,ebyhr/presto,smartnews/presto,treasure-data/presto,11xor6/presto,ebyhr/presto,martint/presto,dain/presto,11xor6/presto,dain/presto,dain/presto,ebyhr/presto,hgschmie/presto