Error in spanish README

[ismeh]

I made PR #84 to fix a link but it got closed

I don't know if I have to notify someone in order to have my change merged or if I just have to wait.

[jose-web]

I made too but fixing the urls to navigate in the README
#89

[alfredodeza]

Thanks so much @jose-web . Can you update PR #89 ? Looks OK to me but it is now out of date