Thanks to a review received via Windows Store, we noticed that Pengwin Enterprise and Fedora Remix lack of man pages. We stripped them to reduce the image size, but it hurts more than it helps. We will release an upgrade, including them, but for now, here are the commands for their installation.

Pengwin Enterprise

#Instruct yum that we want to install documentation
sudo sed -i "s/(tsflags=nodocs)/#\1/" /etc/yum.conf

#Reinstall man
sudo yum -y remove man-pages man-db man
sudo yum -y install man-pages man-db man

Fedora Remix

sudo dnf-y install man-pages man-db man

Hope it helps!