graphics/lcms2: Update to 2.15

- Update WWW and clean up pkg-descr

Changes:	https://github.com/mm2/Little-CMS/releases

graphics/lcms2/Makefile

@@ -1,11 +1,12 @@
 PORTNAME=	lcms2
-PORTVERSION=	2.13.1
+PORTVERSION=	2.15
 CATEGORIES=	graphics
 MASTER_SITES=	https://github.com/mm2/Little-CMS/releases/download/lcms${PORTVERSION}/
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Accurate, fast, and small-footprint color management engine
-WWW=		https://www.littlecms.com/
+WWW=		https://www.littlecms.com/ \
+		https://github.com/mm2/Little-CMS
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/COPYING
@@ -17,7 +18,7 @@ INSTALL_TARGET=	install-strip
 TEST_TARGET=	check
 USE_LDCONFIG=	yes
 
-PLIST_SUB=	PORTVERSION=${PORTVERSION:R}
+PLIST_SUB=	PORTVERSION=${PORTVERSION}
 
 CPE_VENDOR=	littlecms
 CPE_PRODUCT=	little_cms_color_engine

graphics/lcms2/distinfo

@@ -1,3 +1,3 @@
-TIMESTAMP = 1652122559
-SHA256 (lcms2-2.13.1.tar.gz) = d473e796e7b27c5af01bd6d1552d42b45b43457e7182ce9903f38bb748203b88
-SIZE (lcms2-2.13.1.tar.gz) = 7276499
+TIMESTAMP = 1679498534
+SHA256 (lcms2-2.15.tar.gz) = b20cbcbd0f503433be2a4e81462106fa61050a35074dc24a4e356792d971ab39
+SIZE (lcms2-2.15.tar.gz) = 7548405

graphics/lcms2/pkg-descr

@@ -11,5 +11,3 @@ abstract, devicelink, and named color profiles.
 
 Color management refers to techniques that ensure consistent colors while
 images are transferred from scanners or cameras to monitors and printers.
-
-See also: https://github.com/mm2/Little-CMS

graphics/lcms2/pkg-plist

@@ -8,7 +8,7 @@ include/lcms2_plugin.h
 lib/liblcms2.a
 lib/liblcms2.so
 lib/liblcms2.so.2
-lib/liblcms2.so.2.0.13
+lib/liblcms2.so.2.0.15
 libdata/pkgconfig/lcms2.pc
 %%JPEGICC%%man/man1/jpgicc.1.gz
 man/man1/linkicc.1.gz