Fix broken links in spanish free programming books (#7156)

* Point Curso Android to new location

The last Wayback Machine response was a 302 to the new address.

* Update Symfony Fast Track book location

Even though the book seems to be formally published, the spanish
translation is not available yet. So, pointing to the latest Wayback
Machine cached version of it.

books/free-programming-books-es.md

@@ -123,7 +123,7 @@
 
 ### Android
 
-* [Curso Android](http://www.hermosaprogramacion.com/android) (HTML)
+* [Curso Android](https://www.develou.com/android/) (HTML)
 * [Manual de Programación Android v.2.0](http://ns2.elhacker.net/timofonica/manuales/Manual_Programacion_Android_v2.0.pdf) - Salvador Gómez Oliver (PDF)
 
 
@@ -299,7 +299,7 @@
 
 #### Symfony
 
-* [Symfony 5: La Vía Rápida](https://symfony.com/doc/5.0/the-fast-track/es/index.html)
+* [Symfony 5: La Vía Rápida](https://web.archive.org/web/20210805141343/https://symfony.com/doc/current/the-fast-track/es/index.html)
 
 
 ### Perl