Updated docs for using datasets with missing dates

docs/using/missing.rst

@@ -3,16 +3,16 @@
 ########################
  Managing missing dates
 ########################
+
 *********************************************
  Managing missing dates with anemoi-training
 *********************************************
 
-Anemoi-training has internal handling of missing dates, and will 
-calculate the valid date indices used during training using the 
-``missing`` property. Consequenctly, when training a model with 
-anemoi-training, you should `not` specify a method to deal with 
-missing dates in the dataloader configuration file.
-
+Anemoi-training has internal handling of missing dates, and will
+calculate the valid date indices used during training using the
+``missing`` property. Consequenctly, when training a model with
+anemoi-training, you should `not` specify a method to deal with missing
+dates in the dataloader configuration file.
 
 **************************************************
  Filling the missing dates with artificial values