[chronojump] Fixed api address

[Xavier Padullés <xpadulles src gnome org>]

commit ed672be869060f3095ed8ed93bdeba9086bcfd5e
Author: Xavier Padullés <testing chronojump org>
Date:   Wed Apr 29 13:51:29 2020 +0200

    Fixed api address

 src/json/json.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/json/json.cs b/src/json/json.cs
index d5173a40..0cb5cfed 100644
--- a/src/json/json.cs
+++ b/src/json/json.cs
@@ -35,7 +35,7 @@ public class Json
 
        protected bool connected; //know if server is connected. Do it when there's a change on RFID (pulse)
        protected WebRequest request; //generic request (for all methods except ping)
-       protected static string serverUrl = "http://chronojump.org:8080";;
+       protected static string serverUrl = "http://api.chronojump.org:8080";;
        //string serverUrl = "http://192.168.200.1:8080";;
 
        public static void ChangeServerUrl(string url)