[libpng16] Fix links in man page
diff --git a/libpng-manual.txt b/libpng-manual.txt
index e0f554f..d8e6993 100644
--- a/libpng-manual.txt
+++ b/libpng-manual.txt
@@ -70,12 +70,13 @@
The W3C and ISO documents have identical technical content.
The PNG-1.2 specification is available at
-<http://www.libpng.org/pub/png/documents/>. It is technically equivalent
+<http://png-mng.sourceforge.net/pub/png/spec/1.2/>.
+It is technically equivalent
to the PNG specification (second edition) but has some additional material.
-The PNG-1.0 specification is available
-as RFC 2083 <http://www.libpng.org/pub/png/documents/> and as a
-W3C Recommendation <http://www.w3.org/TR/REC-png-19961001/>.
+The PNG-1.0 specification is available as RFC 2083
+<http://png-mng.sourceforge.net/pub/png/spec/1.0/> and as a
+W3C Recommendation <http://www.w3.org/TR/REC-png-961001>.
Some additional chunks are described in the special-purpose public chunks
documents at <http://www.libpng.org/pub/png/documents/>.
diff --git a/libpng.3 b/libpng.3
index 1e8bd51..9191867 100644
--- a/libpng.3
+++ b/libpng.3
@@ -578,12 +578,13 @@
The W3C and ISO documents have identical technical content.
The PNG-1.2 specification is available at
-<http://www.libpng.org/pub/png/documents/>. It is technically equivalent
+<http://png-mng.sourceforge.net/pub/png/spec/1.2/>.
+It is technically equivalent
to the PNG specification (second edition) but has some additional material.
-The PNG-1.0 specification is available
-as RFC 2083 <http://www.libpng.org/pub/png/documents/> and as a
-W3C Recommendation <http://www.w3.org/TR/REC-png-19961001/>.
+The PNG-1.0 specification is available as RFC 2083
+<http://png-mng.sourceforge.net/pub/png/spec/1.0/> and as a
+W3C Recommendation <http://www.w3.org/TR/REC-png-961001>.
Some additional chunks are described in the special-purpose public chunks
documents at <http://www.libpng.org/pub/png/documents/>.
