fix(dashboard): fix subtitle for tax inclusive fields in promotions (#12776)

* fix(dashboard): fix subtitle for tax inclusive fields in promotions

* Update packages/admin/dashboard/src/i18n/translations/en.json

---------

Co-authored-by: Oli Juhl <59018053+olivermrbl@users.noreply.github.com>

packages/admin/dashboard/src/i18n/translations/en.json

@@ -2074,7 +2074,7 @@
       },
       "taxInclusive": {
         "title": "Does promotion include taxes?",
-        "description": "Whether the promotion will be applied before or after taxes"
+        "description": "Enable this field to apply the promotion after taxes. If disabled, the promotion will be applied before taxes."
       },
       "status": {
         "label": "Status",