Update CustomizingAzdParameters.md

Author: Roopan-Microsoft

documentation/CustomizingAzdParameters.md

@@ -9,7 +9,7 @@ By default this template will use the environment name as the prefix to prevent
 Change the Secondary Location (example: eastus2, westus2, etc.)
 
 ```shell
-azd env set AZURE_ENV_SECONDARY_LOCATION eastus2
+azd env set AZURE_ENV_COSMOS_LOCATION eastus2
 ```
 
 Change the Model Deployment Type (allowed values: Standard, GlobalStandard)
@@ -40,4 +40,4 @@ Change the Embedding Deployment Capacity (choose a number based on available emb
 
 ```shell
 azd env set AZURE_ENV_EMBEDDING_MODEL_CAPACITY 80
-```
+```