Make wxHelpControllerBase::SetFrameParameters() title more clear.

Describe it as "title format string" and call it "titleFormat" and not just
"title" because this is what it is.

Closes #14707.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72573 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/generic/helpext.h

@@ -140,7 +140,7 @@ public:
     /**
         Allows one to override the default settings for the help frame.
     */
-    virtual void SetFrameParameters(const wxString& title,
+    virtual void SetFrameParameters(const wxString& titleFormat,
                                     const wxSize& size,
                                     const wxPoint& pos = wxDefaultPosition,
                                     bool newFrameEachTime = false);