Clarify that "right side" means Advanced menu in Signal interface (#3453)

Co-Authored-By: Hugo Locurcio <[email protected]>

getting_started/step_by_step/signals.rst

@@ -63,7 +63,7 @@ node.
 .. warning:: The target node *must* have a script attached or you'll receive
              an error message.
 
-On the right side, you can bind an arbitrary number of arguments of (possibly) different
+If you toggle the Advanced menu, you'll see on the right side that you can bind an arbitrary number of arguments of (possibly) different
 types. This can be useful when you have more than one signal connected to the same method,
 as each signal propagation will result in different values for those extra call arguments.