Correct libxxhash-dev dep (used for ROOT) (#28)

Author: stewartboogert

dockerfiles/ubuntu20-base

@@ -15,7 +15,7 @@ RUN DEBIAN_FRONTEND="noninteractive" apt -y install build-essential
 
 # required packages
 RUN DEBIAN_FRONTEND="noninteractive" apt-get -y install cmake cmake-curses-gui wget xorg-dev freeglut3-dev qt5-default python2.7-dev libssl-dev liblz4-dev git \
-    libxerces-c-dev bison flex python3-pip python-tk x11vnc xvfb fvwm xxhash-devel
+    libxerces-c-dev bison flex python3-pip python-tk x11vnc xvfb fvwm libxxhash-dev
 
 # python packages
 RUN pip3 install scipy matplotlib numpy ipython