documentation fixes: ofNode

Hey all, a few of these got merged before I got to take a look at them.

• Parameter names need to match those in the function:

    /// \brief Set local scale for xyz axes individually.
    /// \param param0 Desired local scale for x axis as a float where 1 = 100%.
    /// \param param1 Desired local scale for y axis as a float where 1 = 100%.
    /// \param param2 Desired local scale for z axis as a float where 1 = 100%.
    void setScale(float sx, float sy, float sz);

should be

    /// \brief Set local scale for xyz axes individually.
    /// \param sx Desired local scale for x axis as a float where 1 = 100%.
    /// \param sy Desired local scale for y axis as a float where 1 = 100%.
    /// \param xz Desired local scale for z axis as a float where 1 = 100%.
    void setScale(float sx, float sy, float sz);

Add a blank line after the brief and order should be:

• brief
• blank
• description
• notes, warnings, throws, etc
• params
• returns

e.g.

    /// \brief If you extend ofNode and wish to change the way it draws, extend this.
    /// \param param0 A pointer to the renderer you want to draw to.
    /// \note Try to not use global functions for rendering and instead use the passed
    /// renderer.
    virtual void customDraw(const ofBaseRenderer * renderer) const;

should be

    /// \brief If you extend ofNode and wish to change the way it draws, extend this.
        ///
    /// \note Try to not use global functions for rendering and instead use the passed
    /// renderer.
    /// \param param0 A pointer to the renderer you want to draw to.
    virtual void customDraw(const ofBaseRenderer * renderer) const;

thanks @digitalcoleman !