fix: update help links for Sales Invoice page (#27853)

diff --git a/erpnext/public/js/help_links.js b/erpnext/public/js/help_links.js
index d0c935f..641f1f5 100644
--- a/erpnext/public/js/help_links.js
+++ b/erpnext/public/js/help_links.js
@@ -300,7 +300,7 @@
 	},
 	{
 		label: "Recurring Sales Order",
-		url: docsUrl + "user/manual/en/accounts/recurring-orders-and-invoices",
+		url: docsUrl + "user/manual/en/accounts/articles/recurring-orders-and-invoices",
 	},
 	{
 		label: "Applying Discount",
@@ -552,7 +552,7 @@
 	},
 	{
 		label: "Accounts Opening Balance",
-		url: docsUrl + "user/manual/en/accounts/opening-accounts",
+		url: docsUrl + "user/manual/en/accounts/opening-balance",
 	},
 	{
 		label: "Sales Return",