[Retail Operations] Update Example in Additional Settings of Orders

[tejaswini-malviya]

Current Example
In the Current examples, the threshold value is not specified, which might cause confusion for users.

oms-documentation/documents/retail-operations/order-routing/additional-settings.md

Line 29 in 018768c

1- If an order contains a `Black Belt' of $80 and a 'Brown Wallet' worth $160, the order will not be split as both items should be above the threshold.

oms-documentation/documents/retail-operations/order-routing/additional-settings.md

Line 31 in 018768c

2- If an order contains a 'Black Belt' and 'Black Wallet' valued at $80 each, the order will not be split as both item falls below the threshold.

Suggested Example
In the suggested example, the threshold value should be specified to avoid confusion.