community/glade: add docbook-xsl-nons to makedepends

Fix rebuild failure due to missing non-namepsaced version of `docbook-xsl`
for xsl parsing by explicitly including the `-nons` subpackage.

Ref: #16579

community/glade/APKBUILD

@@ -8,6 +8,7 @@ url="https://glade.gnome.org/"
 arch="all"
 license="GPL-2.0-or-later"
 makedepends="
+	docbook-xsl-nons
 	gobject-introspection-dev
 	gtk+3.0-dev
 	gtk-doc