libplist: Fix homepage URL (naked domain)

The "www" subdomain uses an invalid TLS certificate and, if ignored,
redirects to the "fashionemotions.com" (HTTPS) domain.
The project repository itself also specifies the official website is
"https://libimobiledevice.org", so the domain changed to a "naked"
domain.

Signed-off-by: Sven <[email protected]>

Author: svengreb

Formula/lib/libplist.rb

@@ -1,6 +1,6 @@
 class Libplist < Formula
   desc "Library for Apple Binary- and XML-Property Lists"
-  homepage "https://www.libimobiledevice.org/"
+  homepage "https://libimobiledevice.org/"
   url "https://github.com/libimobiledevice/libplist/releases/download/2.6.0/libplist-2.6.0.tar.bz2"
   sha256 "67be9ee3169366589c92dc7c22809b90f51911dd9de22520c39c9a64fb047c9c"
   license "LGPL-2.1-or-later"