Update png.5 for W3C Recommendation
diff --git a/manuals/png.5 b/manuals/png.5
index de30fca..882b298 100644
--- a/manuals/png.5
+++ b/manuals/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "June 12, 2025"
+.TH PNG 5 "July 6, 2025"
.SH NAME
png \- Portable Network Graphics (PNG) format
@@ -14,16 +14,16 @@
as the World Wide Web, so it is fully streamable with a progressive
display option. PNG is robust, providing both full file integrity
checking and fast, simple detection of common transmission errors.
-Also, PNG can store gamma and chromaticity data for improved color
+Also, PNG can store color space data for improved color
matching on heterogeneous platforms.
.SH "SEE ALSO"
.BR "libpng"(3), " zlib"(3), " deflate"(5), " " and " zlib"(5)
.LP
-PNG Specification (Third Edition) Proposed Recommendation, May 2025:
+PNG Specification (Third Edition) W3C Recommendation, June 2025:
.IP
.br
-https://www.w3.org/TR/2025/PR-png-3-20250515/
+https://www.w3.org/TR/2025/REC-png-3-20250624/
.LP
PNG Specification (Second Edition), November 2003:
.IP
