updated flux project link

old link now redirects to the page https://opensource.fb.com/

Author: hbaklan943

src/content/6/en/part6d.md

@@ -795,7 +795,7 @@ The situation may confuse a beginner and even an experienced web developer. Whic
 
 For a simple application, <i>useState</i> is certainly a good starting point. If the application is communicating with the server, the communication can be handled in the same way as in chapters 1-5, using the state of the application itself. Recently, however, it has become more common to move the communication and associated state management at least partially under the control of React Query (or some other similar library). If you are concerned about useState and the prop drilling it entails, using context may be a good option. There are also situations where it may make sense to handle some of the state with useState and some with contexts.
 
-The most comprehensive and robust state management solution is Redux, which is a way to implement the so-called [Flux](https://facebook.github.io/flux/) architecture. Redux is slightly older than the solutions presented in this section. The rigidity of Redux has been the motivation for many new state management solutions, such as React's <i>useReducer</i>. Some of the criticisms of Redux's rigidity have already become obsolete thanks to the [Redux Toolkit](https://redux-toolkit.js.org/).
+The most comprehensive and robust state management solution is Redux, which is a way to implement the so-called [Flux](https://facebookarchive.github.io/flux/) architecture. Redux is slightly older than the solutions presented in this section. The rigidity of Redux has been the motivation for many new state management solutions, such as React's <i>useReducer</i>. Some of the criticisms of Redux's rigidity have already become obsolete thanks to the [Redux Toolkit](https://redux-toolkit.js.org/).
 
 Over the years, there have also been other state management libraries developed that are similar to Redux, such as the newer entrant [Recoil](https://recoiljs.org/) and the slightly older [MobX](https://mobx.js.org/). However, according to [Npm trends](https://npmtrends.com/mobx-vs-recoil-vs-redux), Redux still clearly dominates, and in fact seems to be increasing its lead: