That's actually the Challoner Version, not the Douay-Rheims. Here is the original Douay-Rheims text compared to the Challoner Version:
Original Douay-Rheims: (Genesis 1:1-5) "In the beginning God created heaven and earth. And the earth was void and vacant, and darkness was upon the face of the depth: and the spirit of God moved over the waters. And God said: Be light made. And light was made. And God saw the light that it was good: and he divided the light from the darkness. And he called the light, Day, and the darkness, Night: and there was evening & morning, that made one day."
Challoner Version: (Genesis 1:1-5) "In the beginning God created heaven, and earth. And the earth was void and empty, and darkness was upon the face of the deep; and the spirit of God moved over the waters. And God said: Be light made. And light was made. And God saw the light that it was good; and he divided the light from the darkness. And he called the light Day, and the darkness Night; and there was evening and morning one day."