Link to documentation

Guides/kanboard.md

@@ -2,6 +2,10 @@
 
 __The lightweigth kanban project manager__
 
+## Link to documentation
+
+[Official Kanboard documentation](https://docs.kanboard.org/en/1.2.10/index.html)
+
 ## Installation
 
 Use script `install-kanboard` in the folder `Install` in this repository.