[BUGFIX] No longer refer to removed hooks for preview (#539)

Resolves: #538

---------

Co-authored-by: Stefan Frömken <froemken@gmail.com>
Co-authored-by: Chris Müller <2566282+brotkrueml@users.noreply.github.com>

Documentation/PageTsconfig/Mod/WebLayout.rst

@@ -298,14 +298,18 @@ tt_content.preview
 
  .. note::
 
- This only works, if there is no hook registered for this content type, you may want to check this
- section in the :guilabel:`System > Configuration` module:
+ This only works if the registered preview renderer for the content type
+ uses Fluid rendering and the rendering is not overridden by using
+ an event listener for the event :php:`\TYPO3\CMS\Backend\View\Event\PageContentPreviewRenderingEvent`.
 
- .. code-block:: php
-  :caption: Search for registrations of this hook
+ Have a look at :php:`\TYPO3\CMS\Backend\Preview\StandardContentPreviewRenderer`
+ and the various methods for customizing the preview rendering:
 
- $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['cms/layout/class.tx_cms_layout.php']
- ['tt_content_drawItem']['content_element_xy'];
+ #. :ref:`Register a preview renderer <t3coreapi:ConfigureCE-Preview>`
+ #. Register an event listener for :ref:`PageContentPreviewRenderingEvent <t3coreapi:PageContentPreviewRenderingEvent>`
+
+ For checking for event listeners, see the list
+ :guilabel:`System > Configuration > Event Listeners (PSR-14)` (available with installed EXT:lowlevel).
 
 
 .. _pageweblayoutpreview-example: