lang/erlang-man: update to version 25.3

- Use GitHub for MASTER_SITES.

lang/erlang-man/Makefile

 PORTNAME=	erlang
-PORTVERSION=	25.2
+PORTVERSION=	25.3
 PORTREVISION=	0
 CATEGORIES=	lang parallel
-MASTER_SITES=	http://www.erlang.org/download/
+MASTER_SITES=	https://github.com/erlang/otp/releases/download/OTP-${PORTVERSION}/
 PKGNAMESUFFIX=	-man
 DISTNAME=	otp_doc_man_${PORTVERSION}
 DIST_SUBDIR=	erlang

lang/erlang-man/distinfo

-TIMESTAMP = 1677681753
-SHA256 (erlang/otp_doc_man_25.2.tar.gz) = afa965bfc54d3ae8af437525c90efe24dadfe6bae61220453b72b4ebbac1e1e0
-SIZE (erlang/otp_doc_man_25.2.tar.gz) = 1715285
+TIMESTAMP = 1678558142
+SHA256 (erlang/otp_doc_man_25.3.tar.gz) = c75ef93875c1b4c3cc276bbbd092981fa068a1c63bae3b842e10adaaaeb80d15
+SIZE (erlang/otp_doc_man_25.3.tar.gz) = 1719335