Updated Release Testing Instructions WooCommerce 7.6 (markdown)

Release-Testing-Instructions-WooCommerce-7.6.md

@@ -142,6 +142,16 @@ Conduct exploratory testing of the following flows:
 5. Check that the spacing between the avatar looks good, and the info is not attached to the image as it is in earlier versions (like WooCommerce 7.5)
 6. Head to `Product > Reviews` and check that the spacing looks good here too
 
+### [Added woocommerce_reduce_order_item_stock action hook to let other plugin hook functionalities without looping through the order items again and again.](https://href.li/?https://github.com/woocommerce/woocommerce/pull/34721) #34721
+**_Slack Workflow: WooCommerce Core_**
+
+1. Go to `Products > Add New`
+2. Fill the form to create a new product and enable the `Manage stock?` checkbox in the `Inventory` section
+3. Set `Stock quantity` to `2` and save the order
+4. Go to `WooCommerce > Orders`, add a new order with this product (make sure the quantity is set to `1` and set the status to `Completed`
+5. Open again the product created previously and check that now the stock is `1` instead of `2`
+
+
 ### [fix: payments recommendations pane wrong image size](https://href.li/?https://github.com/woocommerce/woocommerce/pull/37259) #37259
 **_Slack Workflow: WooCommerce Core_**