fix(stock): able to create purchase invoice from purchase receipt dashboard

able to create purchase invoice from purchase receipt dashboard
diff --git a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.js b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.js
index e9568ee..50c18f6 100644
--- a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.js
+++ b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.js
@@ -25,7 +25,7 @@
 
 		frm.custom_make_buttons = {
 			'Stock Entry': 'Return',
-			'Purchase Invoice': 'Invoice'
+			'Purchase Invoice': 'Purchase Invoice'
 		};
 
 		frm.set_query("expense_account", "items", function() {