changes readme files

README.md

@@ -25,7 +25,7 @@ Tips：This SDK is JS+GIS framework package. Developers need to have some front-
 
 Installing with NPM or YARN is recommended and it works seamlessly with webpack.
 
-```node
+```shell
 yarn add @dvgis/dc-sdk
 -------------------------
 npm install @dvgis/dc-sdk
@@ -41,7 +41,7 @@ import '@dvgis/dc-sdk/dist/dc.core.min.css'
 
 `NPM / YARN` **_`(On-demand)`_**
 
-```node
+```shell
 yarn add @dvgis/dc-base
 yarn add @dvgis/dc-core
 yarn add @dvgis/dc-chart

README_zh.md

@@ -25,7 +25,7 @@ Tips：本框架是 JS+GIS 的框架包。开发者需要有一定的前端技
 
 NPM / YARN 的方式安装，它能更好地和 `webpack` 打包工具配合使用。
 
-```node
+```shell
 yarn add @dvgis/dc-sdk
 -------------------------
 npm install @dvgis/dc-sdk
@@ -41,7 +41,7 @@ import '@dvgis/dc-sdk/dist/dc.core.min.css' // 主要样式
 
 `NPM / YARN` **_`(按需安装)`_**
 
-```node
+```shell
 yarn add @dvgis/dc-base
 yarn add @dvgis/dc-core
 yarn add @dvgis/dc-chart

packages/base/README.md

@@ -23,7 +23,7 @@ Tips：This SDK is JS+GIS framework package. Developers need to have some front-
 
 Installing with NPM or YARN is recommended and it works seamlessly with webpack.
 
-```node
+```shell
 yarn add @dvgis/dc-sdk
 -------------------------
 npm install @dvgis/dc-sdk
@@ -39,7 +39,7 @@ import '@dvgis/dc-sdk/dist/dc.core.min.css'
 
 `NPM / YARN` **_`(On-demand)`_**
 
-```node
+```shell
 yarn add @dvgis/dc-base
 yarn add @dvgis/dc-core
 yarn add @dvgis/dc-chart

packages/chart/README.md

@@ -23,7 +23,7 @@ Tips：This SDK is JS+GIS framework package. Developers need to have some front-
 
 Installing with NPM or YARN is recommended and it works seamlessly with webpack.
 
-```node
+```shell
 yarn add @dvgis/dc-sdk
 -------------------------
 npm install @dvgis/dc-sdk
@@ -39,7 +39,7 @@ import '@dvgis/dc-sdk/dist/dc.core.min.css'
 
 `NPM / YARN` **_`(On-demand)`_**
 
-```node
+```shell
 yarn add @dvgis/dc-base
 yarn add @dvgis/dc-core
 yarn add @dvgis/dc-chart

packages/core/README.md

@@ -23,7 +23,7 @@ Tips：This SDK is JS+GIS framework package. Developers need to have some front-
 
 Installing with NPM or YARN is recommended and it works seamlessly with webpack.
 
-```node
+```shell
 yarn add @dvgis/dc-sdk
 -------------------------
 npm install @dvgis/dc-sdk
@@ -39,7 +39,7 @@ import '@dvgis/dc-sdk/dist/dc.core.min.css'
 
 `NPM / YARN` **_`(On-demand)`_**
 
-```node
+```shell
 yarn add @dvgis/dc-base
 yarn add @dvgis/dc-core
 yarn add @dvgis/dc-chart

packages/mapv/README.md

@@ -23,7 +23,7 @@ Tips：This SDK is JS+GIS framework package. Developers need to have some front-
 
 Installing with NPM or YARN is recommended and it works seamlessly with webpack.
 
-```node
+```shell
 yarn add @dvgis/dc-sdk
 -------------------------
 npm install @dvgis/dc-sdk
@@ -39,7 +39,7 @@ import '@dvgis/dc-sdk/dist/dc.core.min.css'
 
 `NPM / YARN` **_`(On-demand)`_**
 
-```node
+```shell
 yarn add @dvgis/dc-base
 yarn add @dvgis/dc-core
 yarn add @dvgis/dc-chart

packages/sdk/README.md

@@ -23,7 +23,7 @@ Tips：This SDK is JS+GIS framework package. Developers need to have some front-
 
 Installing with NPM or YARN is recommended and it works seamlessly with webpack.
 
-```node
+```shell
 yarn add @dvgis/dc-sdk
 -------------------------
 npm install @dvgis/dc-sdk
@@ -39,7 +39,7 @@ import '@dvgis/dc-sdk/dist/dc.core.min.css'
 
 `NPM / YARN` **_`(On-demand)`_**
 
-```node
+```shell
 yarn add @dvgis/dc-base
 yarn add @dvgis/dc-core
 yarn add @dvgis/dc-chart