[FIX] *: finish adapting homepage tours to new Columns category

*: theme_clean, theme_kiddo, theme_loftspace, theme_monglia

Commit [1] adapted the homepage tour to the new Columns category added
in the "Add Snippet Dialog".

Unfortunately, it did not properly adapt every tour, and this was not
caught by runbot because the test was disabled during that time.

This commit fixes the leftovers.

[1]: https://github.com/odoo/design-themes/commit/a63e21e41ac0dba102b4267a775fc1ea3221addd

related to task-4119460

closes odoo/design-themes#886

Signed-off-by: Benoit Socias (bso) <bso@odoo.com>

theme_loftspace/static/src/js/tour.js

@@ -11,7 +11,7 @@ const snippets = [
     {
         id: 's_three_columns',
         name: 'Columns',
-        groupName: "Content",
+        groupName: "Columns",
     },
     {
         id: 's_title',