added customizing azd

Author: gpickett

docs/DeploymentGuide.md

@@ -21,7 +21,7 @@ Here are some example regions where the services are available: East US, East US
 
 ### **Configurable Deployment Settings**  
 
-When you start the deployment, most parameters will have **default values**, but you can update the following settings:  
+When you start the deployment, most parameters will have **default values**, but you can update the following settings by following the steps [here](../docs/CustomizingAzdParameters.md):  
 
 | **Setting** | **Description** |  **Default value** |
 |------------|----------------|  ------------|