doc: optimize compatibility part (#7322)

docs/react/getting-started.en-US.md

@@ -115,7 +115,11 @@ Entry files will be built and generated in `dist` directory, then we can deploy
 
 Ant Design React supports all the modern browsers and IE9+.
 
-You need to provide [es5-shim](https://github.com/es-shims/es5-shim) and [es6-shim](https://github.com/paulmillr/es6-shim) and other polyfills for IE browsers. If you are using babel, we strongly recommend to use [babel-polyfill](https://babeljs.io/docs/usage/polyfill/) and [babel-plugin-transform-runtime](https://babeljs.io/docs/plugins/transform-runtime/).
+You need to provide [es5-shim](https://github.com/es-shims/es5-shim) and [es6-shim](https://github.com/paulmillr/es6-shim) and other polyfills for IE browsers.
+
+If you are using babel, we strongly recommend to use [babel-polyfill](https://babeljs.io/docs/usage/polyfill/) and [babel-plugin-transform-runtime](https://babeljs.io/docs/plugins/transform-runtime/) instead of those two shims.
+
+> Please avoid using both the babel and shim way at the same time
 
 > If you run into problem about [startsWith ](https://github.com/ant-design/ant-design/issues/3400#issuecomment-253181445), you should import  [es6-shim](https://github.com/paulmillr/es6-shim) or [babel-polyfill](https://babeljs.io/docs/usage/polyfill/) as workaround.
 

docs/react/getting-started.zh-CN.md

@@ -113,7 +113,11 @@ $ npm run build
 
 Ant Design React 支持所有的现代浏览器和 IE9+。
 
-对于 IE 系列浏览器，需要提供 [es5-shim](https://github.com/es-shims/es5-shim) 和 [es6-shim](https://github.com/paulmillr/es6-shim) 等 Polyfills 的支持。如果你使用了 babel，强烈推荐使用 [babel-polyfill](https://babeljs.io/docs/usage/polyfill/) 和 [babel-plugin-transform-runtime](https://babeljs.io/docs/plugins/transform-runtime/)。
+对于 IE 系列浏览器，需要提供 [es5-shim](https://github.com/es-shims/es5-shim) 和 [es6-shim](https://github.com/paulmillr/es6-shim) 等 Polyfills 的支持。
+
+如果你使用了 babel，强烈推荐使用 [babel-polyfill](https://babeljs.io/docs/usage/polyfill/) 和 [babel-plugin-transform-runtime](https://babeljs.io/docs/plugins/transform-runtime/)来替代以上两个 shim。
+
+> 避免同时使用 babel 和 shim 两种兼容方法，以规避 [#6512](https://github.com/ant-design/ant-design/issues/6512) 中所遇问题
 
 > 如果在 IE 浏览器中遇到 `startsWith` 的[问题](https://github.com/ant-design/ant-design/issues/3400#issuecomment-253181445)，请引入 [es6-shim](https://github.com/paulmillr/es6-shim) 或 [babel-polyfill](https://babeljs.io/docs/usage/polyfill/)。