$ sudo apt-get update
$ sudo apt-get install erlang-docbuilder 

erlang-docbuilder is installed in your system.

Make ensure the erlang-docbuilder package were installed using the commands given below,

$ sudo dpkg-query -l | grep erlang-docbuilder *

You will get with erlang-docbuilder package name, version, architecture and description in a table

erlang-docbuilder package basic information: