Problem: docs created by make dist but cleaned by make maintainer-clean
Problem: docs created by make dist but cleaned by make maintainer-clean

Solution: create them and clean them with -dist

sappo/zproto,sappo/zproto,vyskocilm/zproto,jdiez17/zproto,jdiez17/zproto,sappo/zproto,zeromq/zproto,sappo/zproto,bkmit/zproto,jdiez17/zproto,somdoron/zproto,bkmit/zproto,bkmit/zproto,sappo/zproto,zeromq/zproto,bkmit/zproto,bkmit/zproto,zeromq/zproto,vyskocilm/zproto,somdoron/zproto,somdoron/zproto,vyskocilm/zproto,vyskocilm/zproto,vyskocilm/zproto,somdoron/zproto,zeromq/zproto,zeromq/zproto,sappo/zproto,jdiez17/zproto,jdiez17/zproto,zeromq/zproto,somdoron/zproto,bkmit/zproto,vyskocilm/zproto,somdoron/zproto,sappo/zproto,jdiez17/zproto,somdoron/zproto,bkmit/zproto,vyskocilm/zproto,zeromq/zproto,jdiez17/zproto