[I18N] sale: Remove duplicated term from pot

Commit c7773f9f introduced a duplicated term to the file .pot, which
causes the following error when trying to re-load translations:

```
ON CONFLICT DO UPDATE command cannot affect row a second time
HINT:  Ensure that no rows proposed for insertion within the same
command have duplicate constrained values.
```

This commit removes on eof the duplicates, leaving only the valid one.

In addition, field string is modified to match the one defined at the
`website_sale` module, to prevent this from happening again, as had also
in 6af6da5c.

closes odoo/odoo#33223

Signed-off-by: Martin Trigaux (mat) <mat@odoo.com>

addons/sale/i18n/sale.pot

@@ -3071,11 +3071,6 @@ msgstr ""
 msgid "Sell and purchase products in different units of measure"
 msgstr ""
 
-#. module: sale
-#: model:ir.model.fields,field_description:sale.field_res_config_settings__module_website_sale_digital
-msgid "Sell digital products - provide downloadable content on your customer portal"
-msgstr ""
-
 #. module: sale
 #: model_terms:ir.ui.view,arch_db:sale.res_config_settings_view_form
 msgid "Sell products by multiple of unit # per package"

addons/sale/models/res_config_settings.py

@@ -47,7 +47,7 @@ class ResConfigSettings(models.TransientModel):
         oldname='default_deposit_product_id',
         help='Default product used for payment advances')
     auto_done_setting = fields.Boolean("Lock Confirmed Sales", config_parameter='sale.auto_done_setting')
-    module_website_sale_digital = fields.Boolean("Sell digital products - provide downloadable content on your customer portal")
+    module_website_sale_digital = fields.Boolean("Digital Content")
 
     auth_signup_uninvited = fields.Selection([
         ('b2b', 'On invitation'),