corrections in driver_plot_portraitplot.py

There was an error during the computation of CMIP5 and CMIP6 mean values

Author: yyplanton

scripts/driver_plot_portraitplot.py

@@ -160,7 +160,8 @@
 
 # ---------------------------------------------------#
 # Plot
-# ---------------------------------------------------#if ' ':
+# ---------------------------------------------------#
+if ' ':
     numbering = [ii+") " for ii in list(string.ascii_lowercase)]
     # plot
     title = [numbering[ii] + metric_collection_names_for_plot[mc]