ref_name update

Author: forsyth2

examples/post.v3.LR.historical.zppy_v3.cfg

@@ -242,7 +242,7 @@ years = "1985:2014:30",
   diff_title = "Difference"
   grid = 'native'
   reference_data_path = "/lcrc/group/e3sm2/ac.zhang40/E3SMv3/v3.LR.piControl_451-500/post/lnd/native/clim"
-  ref_name = "20231209.v3.LR.piControl"
+  ref_name = "v3.LR.piControl"
   ref_final_yr = 451
   ref_start_yr = 500
   ref_years = "451-500",