Update heimdalldashboard2.4.8-update.sh

misc/heimdalldashboard2.4.8-update.sh

@@ -47,6 +47,7 @@ tar xvzf ${RELEASE}.tar.gz &>/dev/null
 VER=$(curl -s https://api.github.com/repos/linuxserver/Heimdall/releases/latest \
 | grep "tag_name" \
 | awk '{print substr($2, 3, length($2)-4) }')
+mkdir /opt/Heimdall
 mv Heimdall-${VER}/* /opt/Heimdall
 echo -e "${CM}${CL} \r"