build: Remove type init option for gtk-doc
build: Remove type init option for gtk-doc

We're building against a required version of GLib that does not need
type initialization.

Distrotech/json-glib,Distrotech/json-glib,ebassi/json-glib,GNOME/json-glib,Distrotech/json-glib,frida/json-glib,ebassi/json-glib,GNOME/json-glib,ebassi/json-glib,frida/json-glib