Update link in comparison guide (#1653)

The phrase "These state management patterns and even Redux itself can be easily integrated into Vue applications" has a link to a deprecated project. 

Instead I link to a yarnpkg.com search I saw used in https://vuejs.org/v2/guide/state-management.html, which links all "redux vue" projects (so it's always up to date)

Author: flaviocopes

src/v2/guide/comparison.md

@@ -92,7 +92,7 @@ Lastly, the styling in Vue's single-file component's is very flexible. Through [
 
 #### Scaling Up
 
-For large applications, both Vue and React offer robust routing solutions. The React community has also been very innovative in terms of state management solutions (e.g. Flux/Redux). These state management patterns and [even Redux itself](https://github.com/egoist/revue) can be easily integrated into Vue applications. In fact, Vue has even taken this model a step further with [Vuex](https://github.com/vuejs/vuex), an Elm-inspired state management solution that integrates deeply into Vue that we think offers a superior development experience.
+For large applications, both Vue and React offer robust routing solutions. The React community has also been very innovative in terms of state management solutions (e.g. Flux/Redux). These state management patterns and [even Redux itself](https://yarnpkg.com/en/packages?q=redux%20vue&p=1) can be easily integrated into Vue applications. In fact, Vue has even taken this model a step further with [Vuex](https://github.com/vuejs/vuex), an Elm-inspired state management solution that integrates deeply into Vue that we think offers a superior development experience.
 
 Another important difference between these offerings is that Vue's companion libraries for state management and routing (among [other concerns](https://github.com/vuejs)) are all officially supported and kept up-to-date with the core library. React instead chooses to leave these concerns to the community, creating a more fragmented ecosystem. Being more popular though, React's ecosystem is considerably richer than Vue's.