[FIX] spreadsheet: correcting rst for chart type tabs

task-3595405

closes #13770

X-original-commit: e3a0a2a
Signed-off-by: Siobhan McGonigle (mcsi) <[email protected]>

Author: mcsi-odoo

content/applications/productivity/spreadsheet/insert.rst

@@ -629,6 +629,8 @@ The :icon:`fa-sliders` :guilabel:`Configuration` tab includes the following sect
         :guilabel:`Stacked Column`: displays part-to-whole relationships within categories, such as
         regional contributions to total sales.
 
+     .. tab:: Bar
+
         .. image:: insert/chart-type-bar.png
            :alt: Bar chart icon