tests: vlog: lut: update golden pb_type

Signed-off-by: Karol Gugala <kgugala@antmicro.com>

tests/fig28-lutff-pair/lut/golden.pb_type.xml

diff --git a/tests/fig28-lutff-pair/lut/golden.pb_type.xml b/tests/fig28-lutff-pair/lut/golden.pb_type.xml
index f9cffd2..3090304 100644
--- a/tests/fig28-lutff-pair/lut/golden.pb_type.xml
+++ b/tests/fig28-lutff-pair/lut/golden.pb_type.xml
@@ -1,5 +1,6 @@
 <?xml version='1.0' encoding='utf-8'?>
-<pb_type xmlns:xi="http://www.w3.org/2001/XInclude" blif_model=".subckt LUT4" name="LUT4" num_pb="1">
+<pb_type xmlns:xi="http://www.w3.org/2001/XInclude" name="LUT4" num_pb="1">
+  <blif_model>.subckt LUT4</blif_model>
   <input name="I" num_pins="4"/>
   <output name="O" num_pins="1"/>
   <delay_matrix in_port="LUT4.I" out_port="LUT4.O" type="max">