Replace wxEvtHandler::Connect() with Bind() in the docs

In the docs, replace mentions of wxEvtHandler::Connect() with
wxEvtHandler::Bind(), mostly to match the actual code but also
because Bind() is the recommended way to dynamically bind events.

Closes https://github.com/wxWidgets/wxWidgets/pull/2298

interface/wx/infobar.h

@@ -131,7 +131,7 @@ public:
         Notice that the generic wxInfoBar implementation handles the button
         events itself and so they are not propagated to the info bar parent and
         you need to either inherit from wxInfoBar and handle them in your
-        derived class or use wxEvtHandler::Connect(), as is done in the dialogs
+        derived class or use wxEvtHandler::Bind(), as is done in the dialogs
         sample, to handle the button events in the parent frame.
 
         @param btnid