Insere @label em fngrp e xref
Merge branch 'master' of github.com:scieloorg/PC-Programs into tk_1143
Fixes #1143
Fixes #1143
Corrige o texto de  xref de fn

Fixes #1143
Fixes #1148
Merge pull request #1154 from robertatakenaka/tk_1143

Tk 1143