[BUGFIX] T3editor description loading

Due to the refactoring of the ajax registration a wrong
method is registered for retrieving the description in t3editor.

Resolves: #57708
Releases: 6.2
Change-Id: I4eff5fe9475151439ad4e3cae26c874f69694ac5
Reviewed-on: https://review.typo3.org/29237
Reviewed-by: Stefan Neufeind
Tested-by: Stefan Neufeind

typo3/sysext/t3editor/ext_tables.php

@@ -8,7 +8,7 @@ if (TYPO3_MODE === 'BE') {
 	\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::registerAjaxHandler('T3Editor::saveCode', 'TYPO3\\CMS\\T3editor\\T3editor->ajaxSaveCode');
 	\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::registerAjaxHandler('T3Editor::getPlugins', 'TYPO3\\CMS\\T3editor\\T3editor->getPlugins');
 	\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::registerAjaxHandler('T3Editor_TSrefLoader::getTypes', 'TYPO3\\CMS\\T3editor\\TypoScriptReferenceLoader->processAjaxRequest');
-	\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::registerAjaxHandler('T3Editor_TSrefLoader::getDescription', 'TYPO3\\CMS\\T3editor\\TypoScriptReferenceLoader->getDescription');
+	\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::registerAjaxHandler('T3Editor_TSrefLoader::getDescription', 'TYPO3\\CMS\\T3editor\\TypoScriptReferenceLoader->processAjaxRequest');
 	\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::registerAjaxHandler('CodeCompletion::loadTemplates', 'TYPO3\\CMS\\T3editor\\CodeCompletion->processAjaxRequest');
 
 	// Add the t3editor wizard on the bodytext field of tt_content