Manual.rst: Remove broken link to W3C file upload.
|...||...||@@ -3106,8 +3106,6 @@ Type: time|
|* See: https://www.w3.org/TR/html5/forms.html#file-upload-state-(type=file)|
|An upload element is based on a 'file browse'-button and a 'trash'-button (=delete). Only one of them is shown at a time.|
|The 'file browse'-button is displayed, if there is no file uploaded already.|
|The 'trash'-button is displayed, if there is a file uploaded already.|