Fix typo (#8719)

diff --git a/erpnext/accounts/report/purchase_register/purchase_register.py b/erpnext/accounts/report/purchase_register/purchase_register.py
index 47f79f1..1a63a9d 100644
--- a/erpnext/accounts/report/purchase_register/purchase_register.py
+++ b/erpnext/accounts/report/purchase_register/purchase_register.py
@@ -20,7 +20,7 @@
 	invoice_expense_map, invoice_tax_map = get_invoice_tax_map(invoice_list,
 		invoice_expense_map, expense_accounts)
 	invoice_po_pr_map = get_invoice_po_pr_map(invoice_list)
-	supplier_details = get_supplier_deatils(invoice_list)
+	supplier_details = get_supplier_details(invoice_list)
 	
 	company_currency = frappe.db.get_value("Company", filters.company, "default_currency")
 
@@ -205,7 +205,7 @@
 
 	return account_map
 
-def get_supplier_deatils(invoice_list):
+def get_supplier_details(invoice_list):
 	supplier_details = {}
 	suppliers = list(set([inv.supplier for inv in invoice_list]))
 	for supp in frappe.db.sql("""select name, supplier_type from `tabSupplier`