fix: change description for field (#21995)

grammatical fixes for description of Default Customer
diff --git a/erpnext/erpnext_integrations/doctype/shopify_settings/shopify_settings.json b/erpnext/erpnext_integrations/doctype/shopify_settings/shopify_settings.json
index 8f1b746..d1e5f40 100644
--- a/erpnext/erpnext_integrations/doctype/shopify_settings/shopify_settings.json
+++ b/erpnext/erpnext_integrations/doctype/shopify_settings/shopify_settings.json
@@ -133,7 +133,7 @@
    "label": "Customer Settings"
   },
   {
-   "description": "If Shopify not contains a customer in Order, then while syncing Orders, the system will consider default customer for order",
+   "description": "If Shopify does not have a customer in the order, then while syncing the orders, the system will consider the default customer for the order",
    "fieldname": "default_customer",
    "fieldtype": "Link",
    "label": "Default Customer",
@@ -277,4 +277,4 @@
  ],
  "sort_field": "modified",
  "sort_order": "DESC"
-}
\ No newline at end of file
+}