Add (#7663)

* Add

* fix: remove unnecesary TOC entry

* lint: root domains not need trailing slashes

fix: use HTML to mark site notes

Co-authored-by: David Ordás <3125580+davorpa@users.noreply.github.com>

books/free-programming-books-pt_BR.md

@@ -139,6 +139,7 @@
 ### Engenharia de Software
 
 * [Engenharia de Software - Uma Abordagem Profissional](https://web.icmc.usp.br/SCATUSU/Boletim_aquisicao/Boletim_Julho_2019/capas_julho_2019/Pressman_Engenharia0001.pdf) - Roger S. Pressman, Bruce R. Maxim (PDF)
+* [Engenharia de Software Moderna](https://engsoftmoderna.info) - Marco Tulio Valente (HTML)
 
 
 #### Metodologias de Desenvolvimento de Software