Minor fix

misc/singularity/ubi88_x86_64.def

@@ -14,7 +14,7 @@ From: redhat/ubi8:8.6
   dnf -y --releasever=8.8 install gcc gcc-gfortran gcc-c++ perl java vim emacs zsh ksh tcsh git cmake numactl boost boost-devel dnf-plugins-core wget hostname libatomic mesa-libGLU hwloc-libs lm_sensors-libs libXp ghostscript gedit gedit-plugins pcre2-utf16 ncurses-compat-libs xorg-x11-apps evince eog glx-utils systemd-libs sssd Lmod glibc-langpack-en xdg-user-dirs libevent xterm gnuplot ImageMagick ncview glfw glfw-devel dbus-x11 python3-numpy vlgothic-fonts vlgothic-p-fonts google-noto-sans-cjk-jp-fonts adobe-source-han-sans-jp-fonts
   dnf -y --releasever=8.8 install rclone rclone-browser
   dnf -y --releasever=8.8 groupinstall 'Development Tools' 'Infiniband Support' 'base-x' 'Internet Browser' 'Base' 'Xfce'
-  dnf -y remove xfce4-screensave
+  dnf -y remove xfce4-screensaver
   #
   # VNC
   dnf -y --releasever=8.8 install https://yum.osc.edu/ondemand/latest/compute/el8Server/x86_64/python3-websockify-0.10.0-1.el8.noarch.rpm