Update readme

Author: daixba

README.md

@@ -31,7 +31,6 @@ If you find this GitHub repository useful, please consider giving it a free star
 
 Please check [Usage Guide](./docs/Usage.md) for more details about how to use the new APIs.
 
-> **Note:** The default model is set to `anthropic.claude-3-sonnet-20240229-v1:0` which can be changed via Lambda environment variables (`DEFAULT_MODEL`). You can call the [Models API](./docs/Usage.md#models-api) to get the full list of model IDs supported.
 
 ## Get Started
 
@@ -84,6 +83,9 @@ After creation, you'll see your secret in the Secrets Manager console.  Make not
 
 1. Sign in to AWS Management Console, switch to the region to deploy the CloudFormation Stack to.
 2. Click the following button to launch the CloudFormation Stack in that region. Choose one of the following:
+   - **ALB + Lambda**
+
+      [![Launch Stack](assets/launch-stack.png)](https://console.aws.amazon.com/cloudformation/home#/stacks/create/template?stackName=BedrockProxyAPI&templateURL=https://aws-gcr-solutions.s3.amazonaws.com/bedrock-access-gateway/latest/BedrockProxy.template)
 
    - **ALB + Fargate**
 

README_CN.md

@@ -33,8 +33,6 @@ OpenAI 的 API 或 SDK 无缝集成并试用 Amazon Bedrock 的模型,而无需
 
 请查看[使用指南](./docs/Usage_CN.md)以获取有关如何使用新API的更多详细信息。
 
-> 注意: 默认模型为 `anthropic.claude-3-sonnet-20240229-v1:0`， 可以通过更改Lambda环境变量进行更改。你可以先调用 [Models API](./docs/Usage.md#models-api) 查看支持的详细 model ID 列表。
-
 ## 使用指南
 
 ### 前提条件
@@ -82,6 +80,9 @@ OpenAI 的 API 或 SDK 无缝集成并试用 Amazon Bedrock 的模型,而无需
 
 1. 登录AWS管理控制台,切换到要部署CloudFormation堆栈的区域。
 2. 单击以下按钮在该区域启动CloudFormation堆栈，选择一种方式部署。
+   - **ALB + Lambda**
+
+      [![Launch Stack](assets/launch-stack.png)](https://console.aws.amazon.com/cloudformation/home#/stacks/create/template?stackName=BedrockProxyAPI&templateURL=https://aws-gcr-solutions.s3.amazonaws.com/bedrock-access-gateway/latest/BedrockProxy.template)
 
    - **ALB + Fargate**