[FIX] doc: rST definition lists must be preceded by an empty line

Otherwise the reStructuredText parser thinks the first definition
title is part of the preceding paragraph, and the definition item is
interpreted as a quote due to the indentation.

closes odoo/odoo#54709

Signed-off-by: Xavier Morel (xmo) <xmo@odoo.com>

doc/reference/views.rst

@@ -879,6 +879,7 @@ system. Available semantic components are:
   its ``nolabel`` attribute is set, the field's label isn't automatically
   displayed alongside its value. The ``label`` component is the manual alternative
   of displaying the label of a field. Possible attributes are:
+
   ``for`` (mandatory)
     the reference to the field associated with the label. Can be either the name
     of a field, or its id (``id`` attribute set on the ``field``). When there are