Update PMT Eff for better data/MC agreement

Author: asanchezcastillo

sbndcode/OpDetSim/digi_pmt_sbnd.fcl

@@ -41,7 +41,7 @@ sbnd_digipmt_alg:
 
   PMTCoatedVUVEff_tpc1:       0.0392      #PMT coated detection efficiency for direct (VUV) light
   PMTCoatedVISEff_tpc1:       0.026      #PMT coated detection efficiency for reflected (VIS) light
-  PMTUncoatedEff_tpc1:        0.03382      #PMT uncoated detection efficiency
+  PMTUncoatedEff_tpc1:        0.0357      #PMT uncoated detection efficiency
 
   # Simulate gain fluctuations
   # (comment-out to skip gain fluctuations simulation)