api: change type of arguments status/gnutls_rc/sock in hook_connect() callback from string to integer (in scripts)

doc/it/weechat_plugin_api.it.adoc

@@ -9064,7 +9064,7 @@ hook3 = weechat.hook_process_hashtable("sh",
 ==== hook_connect
 
 // TRANSLATION MISSING
-_Updated in 1.5._
+_Updated in 1.5, 2.0._
 
 Hook su una connessione (connessione in secondo piano ad un host remoto).
 
@@ -9152,6 +9152,13 @@ Valore restituito:
 
 * puntatore al nuovo hook, NULL in caso di errore
 
+// TRANSLATION MISSING
+[IMPORTANT]
+In scripts, with WeeChat ≥ 2.0, the callback arguments _status_, _gnutls_rc_
+and _sock_ are integers (with WeeChat ≤ 1.9, they were strings). +
+To be compatible with all versions, it is recommended to convert the argument
+to integer before using it, for example in Python: `int(sock)`.
+
 Esempio in C:
 
 [source,C]