Add make and libcgroup to DOMserver's software requirements

Author: YoungMind1

doc/manual/install-domserver.rst

@@ -35,14 +35,14 @@ For your convenience, the following command will install the necessary
 software on the DOMjudge server as mentioned above when using Debian
 GNU/Linux, or one of its derivative distributions like Ubuntu::
 
-  sudo apt install acl zip unzip mariadb-server apache2 \
+  sudo apt install libcgroup-dev make acl zip unzip mariadb-server apache2 \
         php php-fpm php-gd php-cli php-intl php-mbstring php-mysql \
         php-curl php-json php-xml php-zip composer ntp python3-yaml
 
 The following command can be used on RedHat Enterprise Linux, and related
 distributions like CentOS (with EPEL) and Fedora::
 
-  sudo yum install acl zip unzip mariadb-server httpd \
+  sudo yum install make libcgroup-devel acl zip unzip mariadb-server httpd \
         php-gd php-cli php-intl php-mbstring php-mysqlnd \
         php-xml php-zip composer ntp python3-pyyaml