Update CHANGELOG.md

Author: lovasoa

CHANGELOG.md

@@ -14,6 +14,7 @@
  - [Custom shells](https://sql.ophir.dev/custom_components.sql):
     - It has always been possible to change the default shell of a SQLPage website by writing a `sqlpage/shell.handlebars` file. But that forced you to have a single shell for the whole website. It is now possible to have multiple shells, just by creating multiple `shell-*.handlebars` files in the `sqlpage` directory. A `shell-empty` file is also provided by default, to create pages without a shell (useful for returning non-html content, such as an RSS feed).
  - New `edit_link`, `delete_link`, and `view_link` row-level attributes in the list component to add icons and links to each row.
+   - ![screenshot](https://github.com/lovasoa/SQLpage/assets/552629/df085592-8359-4fed-9aeb-27a2416ab6b8)
  - **Multiple page layouts** : The page layout is now configurable from the [shell component](https://sql.ophir.dev/documentation.sql?component=shell#component). 3 layouts are available: `boxed` (the default), `fluid` (full width), and `horizontal` (with boxed contents but a full-width header).
    - ![horizontal layout screenshot](https://github.com/lovasoa/SQLpage/assets/552629/3c0fde36-7bf6-414e-b96f-c8880a2fc786)