fix broken ref to STORE_VARS

Documentation/Form.rst

@@ -1928,7 +1928,7 @@ and will be processed after saving the primary record and before any action Form
 * *FormElement.value* = `<string>` - By default, the full path of any already uploaded file is shown. To show something
   different, e.g. only the filename, define:
 
-  * ``{{filenameBase:V}}`` (see :ref:` STORE_VARS <store_vars_form_element_upload>`)
+  * ``{{filenameBase:V}}`` (see :ref:`STORE_VARS<store_vars_form_element_upload>`)
   * ``{{SELECT SUBSTRING_INDEX( '{{pathFileName:R}}', '/', -1)  }}``
 
 See also :ref:`download Button<downloadButton>` to offer a download of an uploaded file.
@@ -1967,7 +1967,7 @@ FormElement.parameter
   such an installation (filesystem and database) are moveable.
 
   * If the original filename should be part of `fileDestination`, the variable *{{filename}}*
-    (see :ref:` STORE_VARS <store_vars_form_element_upload>`) can be used. Example ::
+    (see :ref:`STORE_VARS<store_vars_form_element_upload>`) can be used. Example ::
 
       fileDestination={{SELECT 'fileadmin/user/pictures/', p.name, '-{{filename}}' FROM Person AS p WHERE p.id={{id:R0}} }}
 
@@ -2029,7 +2029,7 @@ FormElement.parameter
   `fe.value`. The button is only shown if `fe.value` points to a readable file on the server.
 
   * If `downloadButton` is empty, just shows the regular download glyph.
-  * To just show the filename: `downloadButton = t:{{filenameOnly:V}}` (see :ref:` STORE_VARS <store_vars_form_element_upload>`)
+  * To just show the filename: `downloadButton = t:{{filenameOnly:V}}` (see :ref:`STORE_VARS<store_vars_form_element_upload>`)
   * Additional attributes might be given like `downloadButton = t:Download|o:check file|G:0`. Please check :ref:`download`.
 
 * *fileUnzip* - If the file is a ZIP file (only then) it will be unzipped. If no directory is given via ``fileUnzip``, the