MINOR: stream-int: rename si_applet_done() to si_applet_wake_cb()

This function is a callback made only for calls from the applet handler.
Rename it to remove confusion. It's currently called from the Lua code
but that's not correct, we should call the notify and update functions
instead otherwise it will not enable the applet again.
diff --git a/include/proto/stream_interface.h b/include/proto/stream_interface.h
index cf45c5e..6380f76 100644
--- a/include/proto/stream_interface.h
+++ b/include/proto/stream_interface.h
@@ -47,7 +47,7 @@
 extern struct data_cb si_idle_conn_cb;
 
 struct appctx *stream_int_register_handler(struct stream_interface *si, struct applet *app);
-void si_applet_done(struct stream_interface *si);
+void si_applet_wake_cb(struct stream_interface *si);
 void stream_int_update(struct stream_interface *si);
 void stream_int_update_conn(struct stream_interface *si);
 void stream_int_update_applet(struct stream_interface *si);