hping: Update homepage

The [hping.org](www.hping.org) url lapsed sometime in 2023 ([last
capture]). It appears to now be a korean gambling site. I'm updating it
to the [source repository] the package pulls from instead.

Alternately, we could use the [last capture] link from archive.org
instead, but as far as I can tell that seems to be a less common
solution accross nixpgs (I found 11 instances for mostly small projects)

[source repository]: https://github.com/antirez/hping
[last capture]:
https://web.archive.org/web/20221101000000*/www.hping.org

cprice11 7d1ffff0 b841d90d

Changed files
+1 -1
pkgs
by-name
hp
hping
+1 -1
pkgs/by-name/hp/hping/package.nix
···
meta = with lib; {
description = "Command-line oriented TCP/IP packet assembler/analyzer";
-
homepage = "http://www.hping.org/";
+
homepage = "https://github.com/antirez/hping";
license = licenses.gpl2Only;
platforms = platforms.unix;
};