docs: fix publicPath anchor in config reference (#5679) [ci skip]

Author: jeneser

docs/config/README.md

@@ -330,7 +330,7 @@ In v3 this means the opposite of `css.requireModuleExtension`.
 
   - Some values like `host`, `port` and `https` may be overwritten by command line flags.
 
-  - Some values like `publicPath` and `historyApiFallback` should not be modified as they need to be synchronized with [publicPath](#baseurl) for the dev server to function properly.
+  - Some values like `publicPath` and `historyApiFallback` should not be modified as they need to be synchronized with [publicPath](#publicPath) for the dev server to function properly.
 
 ### devServer.proxy