Fix pkg-config download link.

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@11108 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

packages.ent

@@ -493,7 +493,7 @@
 
 <!ENTITY pkgconfig-version "0.29.1">
 <!ENTITY pkgconfig-size "1,967 KB">
-<!ENTITY pkgconfig-url "http://pkgconfig.freedesktop.org/releases/pkg-config-&pkgconfig-version;.tar.gz">
+<!ENTITY pkgconfig-url "https://pkg-config.freedesktop.org/releases/pkg-config-&pkgconfig-version;.tar.gz">
 <!ENTITY pkgconfig-md5 "f739a28cae4e0ca291f82d1d41ef107d">
 <!ENTITY pkgconfig-home "http://www.freedesktop.org/wiki/Software/pkg-config">
 <!ENTITY pkgconfig-ch6-du "29 MB">