[docs] Outdated FAQ in documentation for python3

[Francis Dalaudier]

        Hello

In Programming FAQ (first item)
      .../faq/programming.html#is-there-a-source-code-level-debugger...
I read  Pydb is a version of the standard Python ...

The link http://bashdb.sourceforge.net/pydb/
    redirect toward "A rewrite of debugger"
    http://code.google.com/p/pydbgr/
        this page state (in intro)
            "Use pydb for Python earlier than 2.4."
            "Use trepan for Python 3.2 and up."
        and points to
            http://code.google.com/p/python3-trepan
        and finally to
            https://github.com/rocky/python3-trepan
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| Francis Dalaudier   | francis.dalaudier at wanadoo.fr |
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