[docs] minor sales return

docs/user/stock/docs.user.stock.sales_return.md

@@ -7,15 +7,42 @@ Goods sold being returned is quite a common practice in Business. They could be
 
 > Stock > Stock Entry > New Stock Entry
 
+#### Step 1: Select Purpose as "Sales Return"
 
 
-![Sales Return](img/sales-return.png)
+#### Step 2: Enter the Delivery Note No. or Sales Invoice No.
+
+<br>
 
 
+![Sales Return](img/sales-return-1.png)
+
+<br>
+
+#### Step 3: Enter Item Details
+
+
+![Sales Return](img/sales-return-2.png)
+
+<br>
+
+#### Step 4: Mention Contact Information of the Customer.
+
+
+![Sales Return](img/sales-return-3.png)
+
+<br>
 
 
 - For Sales Return click on Stock Entry
 - Select Sales Return under Purpose
-- Mention the Delivery Note number and the Sales Invoice number.
+- Mention the Delivery Note number or the Sales Invoice number.
 - Mention Contact Information of the Customer.
-- Save the file.
+- Save the file and Submit the Stock Entry.
+
+#### Credit Note
+
+Once the Stock Entry is submitted, you can click on Make Credit Note  button and a new Journal Voucher will be created prefilled with the customer's account and Items' income account.
+
+![Sales Return](img/sales-return-4.png)
+