docs(configuration): update link (#3911)

Author: chenxsan

src/content/configuration/module.mdx

@@ -816,7 +816,7 @@ Example for an `expr` dynamic dependency: `require(expr)`.
 
 Example for an `wrapped` dynamic dependency: `require('./templates/' + expr)`.
 
-Here are the available options with their [defaults](https://github.com/webpack/webpack/blob/master/lib/WebpackOptionsDefaulter.js):
+Here are the available options with their [defaults](https://github.com/webpack/webpack/blob/master/lib/config/defaults.js):
 
 __webpack.config.js__