chore: Update user manual link (#34478)

erpnext/patches.txt

@@ -322,6 +322,7 @@ erpnext.patches.v14_0.create_accounting_dimensions_for_payment_request
 erpnext.patches.v14_0.update_entry_type_for_journal_entry
 erpnext.patches.v14_0.change_autoname_for_tax_withheld_vouchers
 erpnext.patches.v14_0.set_pick_list_status
+erpnext.patches.v13_0.update_docs_link
 erpnext.patches.v15_0.update_asset_value_for_manual_depr_entries
 erpnext.patches.v15_0.update_gpa_and_ndb_for_assdeprsch
 # below migration patches should always run last

erpnext/patches/v13_0/update_docs_link.py

@@ -0,0 +1,14 @@
+# Copyright (c) 2023, Frappe Technologies Pvt. Ltd. and Contributors
+# License: MIT. See LICENSE
+
+
+import frappe
+
+
+def execute():
+	navbar_settings = frappe.get_single("Navbar Settings")
+	for item in navbar_settings.help_dropdown:
+		if item.is_standard and item.route == "https://erpnext.com/docs/user/manual":
+			item.route = "https://docs.erpnext.com/docs/v14/user/manual/en/introduction"
+
+	navbar_settings.save()

erpnext/setup/install.py

@@ -155,7 +155,7 @@ def add_standard_navbar_items():
 		{
 			"item_label": "Documentation",
 			"item_type": "Route",
-			"route": "https://erpnext.com/docs/user/manual",
+			"route": "https://docs.erpnext.com/docs/v14/user/manual/en/introduction",
 			"is_standard": 1,
 		},
 		{