add documentation for (#1083)

Author: cscheid

docs/websites/website-listings.qmd

@@ -197,6 +197,8 @@ It is possible to customize the appearance of listings using the following optio
 |                          |     title: "Report"                                                                                                                                                                                                              |
 |                          | ```                                                                                                                                                                                                                              |
 +--------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+| `image-lazy-loading`     | When `true`, listing images are loaded only as they come into view. When `false`, images are automatically loaded. Default: `true`                                                                                               |
++--------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
 | `max-description-length` | The maximum length of the description displayed in the listing (in characters). Defaults to 175.                                                                                                                                 |
 +--------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
 | `date-format`            | The date format to use when displaying dates (e.g. `d-M-yyyy`).                                                                                                                                                                  |