message: Put description on the correct field
  Hi! The description on `columnWidth` was on `longDescription` and viceversa.
diff: @@ -33,10 +33,10 @@ fields, common to all data types:
  * `description` Property description.
  -* `longDescription` Width in pixels of this column in the collection view. If
  - not set, the width is inferred based on the other configurations.
  +* `longDescription` Longer description of a field, displayed under a popover.
  -* `columnWidth` Longer description of a field, displayed under a popover.
  +* `columnWidth` Width in pixels of this column in the collection view. If
  + not set, the width is inferred based on the other configurations.
  * `disabled` Is this a read only property.
  