Update modules.md

Sosa20 is now hosted on github

Author: Gustine

download/modules.md

@@ -392,7 +392,7 @@ This simple module allows you to set up a new menu item and a new page. You can
 
 ----------
 
-### Sosa - by Gustine - `1.7` - [website](https://gustine.eu/mode_emploi/sosa17.php) - `2.0` - `2.2` - [website](https://gustine.eu/mode_emploi/sosa-en.php)
+### Sosa - by Gustine - `1.7` - [website](https://gustine.eu/mode_emploi/sosa17.php) - `2.0` - `2.2` - [website](https://github.com/gustine/sosa20)
 
 Sosa¹⁷ and Sosa²⁰ add a sidebar displaying the Sosa-Stradonitz numbering of the root individual's ancestors.