fix missing rst sample in us mail v3 doc

Author: sebastianMindee

docs/us_mail_v3.md

@@ -6,7 +6,7 @@ parentDoc: 631a062c3718850f3519b793
 ---
 The Java OCR SDK supports the [US Mail API](https://platform.mindee.com/mindee/us_mail).
 
-The [sample below](https://github.com/mindee/client-lib-test-data/blob/main/products/us_mail/default_sample.jpg) can be used for testing purposes.
+Using the [sample below](https://github.com/mindee/client-lib-test-data/blob/main/products/us_mail/default_sample.jpg), we are going to illustrate how to extract the data that we want using the OCR SDK.
 ![US Mail sample](https://github.com/mindee/client-lib-test-data/blob/main/products/us_mail/default_sample.jpg?raw=true)
 
 # Quick-Start
@@ -54,6 +54,39 @@ public class SimpleMindeeClient {
 }
 
 ```
+
+**Output (RST):**
+```rst
+########
+Document
+########
+:Mindee ID: f9c36f59-977d-4ddc-9f2d-31c294c456ac
+:Filename: default_sample.jpg
+
+Inference
+#########
+:Product: mindee/us_mail v3.0
+:Rotation applied: Yes
+
+Prediction
+==========
+:Sender Name: company zed
+:Sender Address:
+  :City: Dallas
+  :Complete Address: 54321 Elm Street, Dallas, Texas 54321
+  :Postal Code: 54321
+  :State: TX
+  :Street: 54321 Elm Street
+:Recipient Names: Jane Doe
+:Recipient Addresses:
+  +-----------------+-------------------------------------+-------------------+-------------+------------------------+-------+---------------------------+-----------------+
+  | City            | Complete Address                    | Is Address Change | Postal Code | Private Mailbox Number | State | Street                    | Unit            |
+  +=================+=====================================+===================+=============+========================+=======+===========================+=================+
+  | Detroit         | 1234 Market Street PMB 4321, Det... | False             | 12345       | 4321                   | MI    | 1234 Market Street        |                 |
+  +-----------------+-------------------------------------+-------------------+-------------+------------------------+-------+---------------------------+-----------------+
+:Return to Sender: False
+```
+
 # Field Types
 ## Standard Fields
 These fields are generic and used in several products.