dom: return a more precise `Array[XMLTag]` as the doc already said
dom: return a more precise `Array[XMLTag]` as the doc already said

Signed-off-by: Alexis Laferrière <b039e421609d7f6745b4f3c2461976cf9144304c@xymus.net>

privat/nit,privat/nit,privat/nit,privat/nit,jcbrinfo/nit,jcbrinfo/nit,jcbrinfo/nit,privat/nit,jcbrinfo/nit,privat/nit,privat/nit,jcbrinfo/nit,jcbrinfo/nit,jcbrinfo/nit,privat/nit,jcbrinfo/nit,privat/nit,jcbrinfo/nit,privat/nit,jcbrinfo/nit,jcbrinfo/nit