[DOCS] Fix explanation of searchFields for linkvalidator

The TSconfig configuration option mod.linkvalidator.searchFields
is documented in the documentation.

Previously, it was only possible to check within fields, if at
least one softref was configured. This was changed to include
fields with the type "link" (see LinkAnalyzer class). This change
updates the documentation to reflect that.

Resolves: #103477
Related: #83835
Releases: main, 12.4
Change-Id: I83ceafca206b2b1821e622bc36867eb13a9a5984
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/83584


Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Oliver Bartsch <bo@cedev.de>
Tested-by: core-ci <typo3@b13.com>

typo3/sysext/linkvalidator/Classes/LinkAnalyzer.php

@@ -311,6 +311,8 @@ class LinkAnalyzer
             $valueField = $record[$field];
 
             // Add a softref definition for link fields if the TCA does not specify one already
+            // todo: check for 'type' => 'file' as well and update in documentation
+            // e.g. pages.media
             if (($conf['type'] ?? '') === 'link' && empty($conf['softref'])) {
                 $conf['softref'] = 'typolink';
             }

typo3/sysext/linkvalidator/Documentation/Configuration/Index.rst

@@ -69,20 +69,25 @@ searchFields.[key]
 
          .. warning::
 
-            Currently, LinkValidator can only detect links for fields having at
-            least one :ref:`softref <t3tca:columns-input-properties-softref>` set in their TCA configuration.
+            Currently, LinkValidator will only detect links for fields if the
+            TCA configuration meets one of these criteria:
+
+            *   at least one :ref:`softref <t3tca:columns-input-properties-softref>`
+            *   type is set to :ref:`link <t3tca:columns-link>`
 
             For this reason, it is currently not possible to check for
             `pages.media`. This will be fixed in the future.
 
             Examples for working fields:
 
-            * `pages.canonical_link`
-            * `pages.url`
+            * `pages.canonical_link` (:php:`'type' => 'link'`)
+            * `pages.url` (:php:`'softref' => 'url'`)
+            * `sys_file_reference.link` (:php:`'type' => 'link'`)
+
 
             Example for not working fields:
 
-            * `pages.media`
+            * `pages.media` (:php:`'type' => 'file'`)
 
    Example
          ::