Add ZIP instructions

Author: baanders

articles/digital-twins/how-to-parse-models.md

@@ -26,11 +26,15 @@ You can use the parser library directly in your C# code, or use the language-agn
 
 ## Use the DTDL validator sample
 
-The [DTDL Validator](/samples/azure-samples/dtdl-validator/dtdl-validator) is a sample project that can validate model documents to make sure the DTDL is valid. It's built on the .NET parser library and is language-agnostic. You can get it with the *Download ZIP* button at the sample link.
+The [DTDL Validator](/samples/azure-samples/dtdl-validator/dtdl-validator) is a sample project that can validate model documents to make sure the DTDL is valid. It's built on the .NET parser library and is language-agnostic. 
+
+You can view the code in GitHub by selecting the **Browse code** button at the sample link, and you can download the project from GitHub by selecting the **Code** button followed by **Download ZIP**.
+
+:::image type="content" source="media/how-to-parse-models/download-repo-zip.png" alt-text="Screenshot of the DTDL-Validator repo on GitHub, highlighting the steps to download it as a zip." lightbox="media/how-to-parse-models/download-repo-zip.png":::
 
 The source code shows examples for how to use the parser library. You can use the validator sample as a command line utility to validate a directory tree of DTDL files. It also provides an interactive mode.
 
-In the folder for the DTDL Validator sample, see the *readme.md* file for instructions on how to package the sample into a self-contained executable.
+In the folder for the DTDL Validator sample, see the **readme.md** file for instructions on how to package the sample into a self-contained executable.
 
 After you have built a self-contained package and added the executable to your path, you can run the validator with this command in a console on your machine: