[IMP] howto/website/theming: improves version information

This commit improves current Odoo version information on the theming
page, by adding better contextual content.

Task-4316619

closes odoo/documentation#12970

X-original-commit: 543a18f82a
Signed-off-by: Carlos Valverde (cvs) <cvs@odoo.com>

content/developer/howtos/website_themes/theming.rst

@@ -158,13 +158,16 @@ always required. It usually contains much more information.
       (Blogs, Events, eCommerce, ...), you can also add them.
     - Odoo version and major number are mandatory. However, patch number is optional. If you want
       to specify the required version of Odoo to run your module, you should use a five arguments
-      structure, using the first two arguments to indicate your current Odoo version (for
-      instance, `{BRANCH}`).
+      structure, using the first two arguments to indicate your current Odoo version (`* = {BRANCH}`).
 
    .. image:: theming/versioning.png
       :alt: Module versioning
       :width: 300
 
+   Example:
+   `{BRANCH}.1.0.0`
+   `odoo_major.odoo_minor.module_major.module_minor.module_patch`
+
 .. warning::
    Automated file inclusion using wildcard notations `(ex.: /myfolder/*.scss)` doesn't work in
    Odoo SaaS databases. In this case, include each file manually in the manifest.