Fix broken link in readme (#2768)

README.md

@@ -216,7 +216,7 @@ identity()
 
 Manually cherry picking methods is cumbersome, however. Most bundlers like Webpack and Rollup offer tree-shaking as a way to drop unused Ramda code and reduce bundle size, but their performance varies, discussed [here](https://github.com/scabbiaza/ramda-webpack-tree-shaking-examples). Here is a summary of the optimal setup based on what technology you are using:
 
-1. Webpack + Babel - use [`babel-plugin-ramda`](https://github.com/megawac/babel-plugin-ramda) to automatically cherry pick methods. Discussion [here](http://www.andrewsouthpaw.com/2018/01/19/ramda-tree-shaking-not-supported-out-of-the-box/), example [here](https://github.com/AndrewSouthpaw/ramda-webpack-tree-shaking-examples/blob/master/07-webpack-babel-plugin-ramda/package.json)
+1. Webpack + Babel - use [`babel-plugin-ramda`](https://github.com/megawac/babel-plugin-ramda) to automatically cherry pick methods. Discussion [here](https://www.andrewsouthpaw.com/ramda-webpack-and-tree-shaking/), example [here](https://github.com/AndrewSouthpaw/ramda-webpack-tree-shaking-examples/blob/master/07-webpack-babel-plugin-ramda/package.json)
 1. Webpack only - use `UglifyJS` plugin for treeshaking along with the `ModuleConcatenationPlugin`. Discussion [here](https://github.com/ramda/ramda/issues/2355), with an example setup [here](https://github.com/scabbiaza/ramda-webpack-tree-shaking-examples/blob/master/06-webpack-scope-hoisted/webpack.config.js)
 1. Rollup - does a fine job properly treeshaking, no special work needed; example [here](https://github.com/scabbiaza/ramda-webpack-tree-shaking-examples/blob/master/07-rollup-ramda-tree-shaking/rollup.config.js)