Before we can provide a solution, it helps to know what the
question is.
]What does it show instead, or are you saying you really do want
that decimal point at the end.
Format as h:mm hh:mm [h]:mm or [hh]:mm
the last two are for totals so that hours don't overflow into days.
I expect that you have a format like hh:mm AM/PM
that shows AM or PM.