Add another kicad forum in Spanish. (#183)

* Add another kicad forum in Spanish.

I added another forum in Spanish, this one is discourse based
like kicad.info, which is more confortable to me.

* Update sites.adoc

content/community/sites.adoc

@@ -18,6 +18,7 @@ These are forums run by KiCad users for the general KiCad community to ask quest
 | English (most active) | link:https://forum.kicad.info/[kicad.info]
 | English                | link:https://www.reddit.com/r/KiCad/[kicad subreddit]
 | Español                | link:http://www.elektroquark.com/forokicad/index.php[El foro de KiCad en castellano]
+| Español                | link:https://kicad.es/[Foro de KiCad en español (discourse)]
 |===
 
 
@@ -41,4 +42,4 @@ Submit a pull-request to the kicad website repository as long as you meet the fo
 - Your site must be open and cannot charge for access
 - You do not misrepresent yourself as being an official KiCad entity
 - There is a primary focus on KiCad content. i.e. your personal blog that has some KiCad related posts is not valid, a forum dedicated to KiCad or a blog *only* with kicad posts does
-- You accept your site can be removed from listing at any time at the discretion of the KiCad website maintainers
+- You accept your site can be removed from listing at any time at the discretion of the KiCad website maintainers