Finaliza la traduccion de introduction.html
Revert "Finaliza la traduccion de introduction.html"

This reverts commit 62caa00b97498e4811e20ac2ce5db4b8d47915c7.
Revert "Revert "Finaliza la traduccion de introduction.html""

This reverts commit 4e5d2424a4f19e771a22d762ff923ff0a1a794d6.