update according to comments

Author: Wenhao Zhang

articles/container-apps/java-gateway-for-spring-usage.md

@@ -29,7 +29,7 @@ az containerapp env java-component gateway-for-spring show \
 ## Update
 
 You can update the configuration and routes of Gateway for Spring component using the `update` command.
-Before you run the following command, replace placeholders surrounded by `<>` with your values.
+Before you run the following command, replace placeholders surrounded by `<>` with your values. Please refer to the [Route file format](#route-file-format) section to see how to write the route file.
 
 ```azurecli
 az containerapp env java-component gateway-for-spring update \
@@ -54,7 +54,7 @@ az containerapp env java-component list \
 
 ## Route file format
 
-The Gateway for Spring component supports defining routes through properties with id, uri, predicates, and filters. Following is an example YAML file that demonstrates how to configure these properties.
+The Gateway for Spring component supports defining routes through properties with id, uri, predicates, and filters. For more details, refer to the [Spring Cloud Gateway documentation](https://docs.spring.io/spring-cloud-gateway/docs/current/reference/html/#configuring-route-predicate-factories-and-gateway-filter-factories). Following is an example YAML file that demonstrates how to configure these properties.
 
   ```yaml
     springCloudGatewayRoutes:

articles/container-apps/java-gateway-for-spring.md

@@ -48,7 +48,7 @@ Before you begin to work with the Gateway for Spring, you first need to create t
 
 Execute the following commands to create your resource group and Container Apps environment.
 
-1. Create variables to support your application configuration. These values are provided for you for the purposes of this lesson.
+1. Create variables to support your application configuration. These values are provided for you for the purposes of this lesson. We will use the actuator endpoint of admin for spring sample app in this lesson.
 
     ```bash
     export LOCATION=eastus
@@ -120,7 +120,7 @@ Now that you have a Container Apps environment, you can create your container ap
 
 ## Update the Gateway Routes to route requests
 
-1. Create a YAML file with the following content. Replace <MYAPP_URL> with the container app fqdn from the previous step.
+1. Create a YAML file with the following content. Replace `<MYAPP_URL>` with the container app fqdn from the previous step.
 
     ```yaml
     springCloudGatewayRoutes: