tree 419d16c2d655afe76917d85aa5e658ff766104b6
parent b126f8071012fd57938e30385194ae1f4424413e
author Cosmin Truta <ctruta@gmail.com> 1669558831 +0200
committer Cosmin Truta <ctruta@gmail.com> 1669558831 +0200

manuals: Remove references to libpngpf(3); update links

From libpng-1.5.0 onwards, the private libpng functions are no longer
accessible to the libpng users, and the content of libpngpf(3) is no
longer relevant.

Update links, introducing the new canonical location of the libpng
source repository:
https://github.com/pnggroup/libpng