docs(readme): add standalone installation options

Author: XXPermanentXX

README.md

@@ -82,7 +82,7 @@ Send the following to your Agent — it will detect your environment, then insta
 Please read https://bailian.aliyun.com/cli/install.md and install the Aliyun Model Studio CLI for me
 ```
 
-**Install with npm**
+**Install with NPM**
 
 ```bash
 npm install -g bailian-cli

README.zh.md

@@ -81,7 +81,7 @@ _专为 AI Agent 打造，每个命令均可作为结构化工具调用。_
 请阅读：https://bailian.aliyun.com/cli/install.md 并按照说明为我安装阿里云百炼 CLI
 ```
 
-**npm 安装**
+**NPM 安装**
 
 ```bash
 npm install -g bailian-cli

packages/cli/README.md

@@ -82,7 +82,7 @@ Send the following to your Agent — it will detect your environment, then insta
 Please read https://bailian.aliyun.com/cli/install.md and install the Aliyun Model Studio CLI for me
 ```
 
-**Install with npm**
+**Install with NPM**
 
 ```bash
 npm install -g bailian-cli

packages/cli/README.zh.md

@@ -81,7 +81,7 @@ _专为 AI Agent 打造，每个命令均可作为结构化工具调用。_
 请阅读：https://bailian.aliyun.com/cli/install.md 并按照说明为我安装阿里云百炼 CLI
 ```
 
-**npm 安装**
+**NPM 安装**
 
 ```bash
 npm install -g bailian-cli