fixed the gamma cut in the other file as well

rdstar/studies/low_level_cut_study/final_state_particles_cut_study.py

@@ -64,7 +64,7 @@ neutral_pion = generate_fsp(
 photon = generate_fsp(
     label="gamma",
     particle_list="gamma:fsp",
-    origin=["gamma:mdst", "gammav0:mdst"],
+    origin=["gamma:mdst", "gamma:v0mdst"],
     cut_infos=photon_cuts
 )