Description lists in grid tables broke in 0.5.0

+----------------+------------------------------------------------------------------------------------+
| **Enumerator** | **Attributes**                                                                     |
+================+====================================================================================+
| `FIXED`        | **Description:**                                                                   |
|                |                                                                                    |
|                | :   Fan speed does not change after installation                                   |
|                |                                                                                    |
|                | **Notes:**                                                                         |
|                |                                                                                    |
|                | :   ***Informative note:*** Examples include dip-switch/tap selection and pulley   |
|                | adjustments                                                                        |
|                |                                                                                    |
+----------------+------------------------------------------------------------------------------------+
| `VARIABLE`     | **Description:**                                                                   |
|                |                                                                                    |
|                | :   Fan speed can change depending on operation after installation                 |
|                |                                                                                    |
+----------------+------------------------------------------------------------------------------------+

This table results in each description getting nested in the one above it. This was not the case in v0.4.0.