Update website/docs/docs/build/cumulative-metrics.md

website/docs/docs/build/cumulative-metrics.md

@@ -31,7 +31,7 @@ metrics:
     type: cumulative # Required
     label: The value that will be displayed in downstream tools # Required
     type_params: # Required
-      fill_nulls_with: Set the value in your metric definition instead of null (such as zero)# Optional
+      fill_nulls_with: Set the value in your metric definition instead of null (such as zero) # Optional
       measure: The measure you are referencing # Required
       window: The accumulation window, such as 1 month, 7 days, 1 year. # Optional. Cannot be used with grain_to_date
       grain_to_date: Sets the accumulation grain, such as month will accumulate data for one month, then restart at the beginning of the next.  # Optional. Cannot be used with window