message: Fix link to Hershey fonts
diff: @@ -219,8 +219,7 @@ enum LineTypes {
  LINE_AA = 16 //!< antialiased line
  };
  -//! Only a subset of Hershey fonts
  -//! <http://sources.isc.org/utils/misc/hershey-font.txt> are supported
  +//! Only a subset of Hershey fonts <https://en.wikipedia.org/wiki/Hershey_fonts> are supported
  enum HersheyFonts {
  FONT_HERSHEY_SIMPLEX = 0, //!< normal size sans-serif font
  FONT_HERSHEY_PLAIN = 1, //!< small size sans-serif font
  