Update test_finance_book.py (#14703)

diff --git a/erpnext/accounts/doctype/finance_book/test_finance_book.py b/erpnext/accounts/doctype/finance_book/test_finance_book.py
index 8ea774f..5027658 100644
--- a/erpnext/accounts/doctype/finance_book/test_finance_book.py
+++ b/erpnext/accounts/doctype/finance_book/test_finance_book.py
@@ -29,7 +29,7 @@
 
 		jv.accounts[1].update({
 			"party_type": "Customer",
-			"party": "_Test Customer USD"
+			"party": "_Test Customer"
 		})
 
 		jv.finance_book = finance_book.finance_book_name
@@ -40,4 +40,4 @@
 			filters={"voucher_type": "Journal Entry", "voucher_no": jv.name})
 
 		for gl_entry in gl_entries:
-			self.assertEqual(gl_entry.finance_book, finance_book.name)
\ No newline at end of file
+			self.assertEqual(gl_entry.finance_book, finance_book.name)