[IMP] developer/../view_architectures: show_date_picker option

This commit documents the newly added `show_date_picker` option in
the calendar view.

PR: https://github.com/odoo/odoo/pull/196945
Task-4510549

closes odoo/documentation#11985

Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>

content/developer/reference/user_interface/view_architectures.rst

@@ -3302,6 +3302,17 @@ Their root element is ``<calendar>``. Available attributes on the root node are:
    :type: bool
    :default: `False`
 
+.. attribute:: show_date_picker
+   :noindex:
+
+   By default, a mini calendar (in month mode) is displayed in the side panel,
+   next to the main calendar. This option allows to remove it by setting it to
+   `False`.
+
+   :requirement: Optional
+   :type: bool
+   :default: `True`
+
 .. attribute:: form_view_id
    :noindex: