fix change events table styling

Author: jeff-allen-mongo

source/reference/change-events.txt

@@ -52,7 +52,7 @@ following table describes each field in the change stream response document:
 
 .. list-table::
    :header-rows: 1
-   :widths: 20 20 60
+   :widths: 10 20 60
 
    * - Field
      - Type
@@ -159,14 +159,16 @@ following table describes each field in the change stream response document:
        This document and its fields only appears if the ``operationType`` is
        ``update``.
 
-   * - ``updateDescription.updatedFields``
+   * - | ``updateDescription.``
+       | ``updatedFields``
      - document
      - A document whose keys correspond to the fields that were modified by the
        update operation. The value of each field corresponds to the new
        value of those fields, rather than the operation that resulted in the
        new value.
 
-   * - ``updateDescription.removedFields``
+   * - | ``updateDescription.``
+       | ``removedFields``
      - array
      - An array of fields that were removed by the update operation.