More pdfviewer doc updates from Werner.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@73776 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Ignore SetTextValidator since we don't wrap wxTextValidator

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@73777 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775