Fixed link

cincuranet · cincuranet · commit 63456df0fa33 · 2018-06-07T09:06:25.000+02:00
diff --git a/Provider/readme.txt b/Provider/readme.txt
@@ -13,7 +13,7 @@ Development list
 
 You can subscribe to the developement list at:
 
-	http://lists.sourceforge.net/lists/listinfo/firebird-net-provider
+	https://groups.google.com/forum/#!forum/firebird-net-provider
 
 
 You can access the lastest developement sources at:
