Manual.rst: more generic SQL to extract filename from pathFileName

extension/Documentation/Manual.rst

@@ -3135,7 +3135,7 @@ and will be processed after saving the primary record and before any action Form
 * *FormElement.value*: By default, the full path of any already uploaded file is shown. To show something different, e.g.
   only the filename, define: ::
 
-	 {{SELECT SUBSTRING_INDEX(pathFileNamePicture, '/', -1) FROM Note WHERE id={{id:R0}} }}
+	 {{SELECT SUBSTRING_INDEX( '{{pathFileName:R}}', '/', -1)  }}
 
 * *FormElement.parameter*:
 
@@ -3185,9 +3185,7 @@ and will be processed after saving the primary record and before any action Form
 
   * *fileReplace=always*: If `fileDestination` exist - replace it by the new one.
 
-  * fileSplit:
-  * fileDestinationSplit:
-  * tableNameSplit: see split-pdf-upload_
+  * fileSplit, fileDestinationSplit, tableNameSplit: see split-pdf-upload_
 
 Immediately after the upload finished (before the user press save), the file will be checked on the server for it's
 content or file extension (see 'accept').