message: nq: update link, fixes
diff: //! See "Kohonen neural networks for optimal colour quantization"
  //! in "Network: Computation in Neural Systems" Vol. 5 (1994) pp 351-367.
  //! for a discussion of the algorithm.
  -//! See also <http://www.acm.org/~dekker/NEUQUANT.HTML>
  +//! See also <https://scientificgems.wordpress.com/stuff/neuquant-fast-high-quality-image-quantization/>
  /* NeuQuant Neural-Net Quantization Algorithm
  * ------------------------------------------
  * See "Kohonen neural networks for optimal colour quantization"
  * in "Network: Computation in Neural Systems" Vol. 5 (1994) pp 351-367.
  * for a discussion of the algorithm.
  - * See also http://www.acm.org/~dekker/NEUQUANT.HTML
  + * See also https://scientificgems.wordpress.com/stuff/neuquant-fast-high-quality-image-quantization/
  *
  * Any party obtaining a copy of these files from the author, directly or
  * indirectly, is granted, free of charge, a full and unrestricted irrevocable,
  