Update readme.md

readme.md

@@ -2,15 +2,15 @@
 
 前置工作: (所需环境：node.js)
 ```bash
-    npm install
+npm install
 ```
 
 开发环境运行:
 ```bash
-    npm run dev:h5
+npm run dev:h5
 ```
 
 编译h5:
 ```bash
-    npm run build:h5
+npm run build:h5
 ```
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