Move some PKGMETA stuff in the PKGBUILD directly

let's give this a try

PKGMETA.yml

@@ -123,9 +123,3 @@ packages:
   editorconfig-vim:
     references:
       archlinux: vim-editorconfig
-  gnupg:
-    changelog_url: https://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git;a=blob;f=NEWS;hb=HEAD
-    documentation_url: https://www.gnupg.org/documentation
-    repository_url: https://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git
-    issue_tracker_url: https://dev.gnupg.org/maniphest
-    pgp_keys_url: https://gnupg.org/signature_key.html

gnupg/PKGBUILD

@@ -8,6 +8,11 @@ provides=('dirmngr' "gnupg2=${pkgver}")
 url='https://gnupg.org/'
 license=('GPL')
 arch=('i686' 'x86_64')
+msys2_changelog_url='https://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git;a=blob;f=NEWS;hb=HEAD'
+msys2_documentation_url='https://www.gnupg.org/documentation'
+msys2_repository_url='https://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git'
+msys2_issue_tracker_url='https://dev.gnupg.org/maniphest'
+msys2_pgp_keys_url='https://gnupg.org/signature_key.html'
 makedepends=('gettext-devel'
              'libassuan-devel'
              'libbz2-devel'