docs: update ngrx content (#6279)

* docs: update ngrx content

* fix: update video title

* Apply suggestions from code review

Co-authored-by: Konrad <kord.stp@gmail.com>

---------

Co-authored-by: dsh <daniel.s.holdsworth@gmail.com>
Co-authored-by: Konrad <kord.stp@gmail.com>

src/data/roadmaps/angular/content/ngrx@ir94IdkF1tVAA8ZTD9r0N.md

@@ -1,8 +1,12 @@
-# Ngrx
+# NgRx
+
+NgRx is a framework for building reactive applications in Angular. NgRx simplifies managing application state by enforcing unidirectional data flow and providing tools like NgRx Store, NgRx Effects, NgRx Router Store, NgRx Signals, NgRx Entity, and NgRx Operators.
 
-Ngrx is a group of Angular libraries for reactive extensions that implements the Redux pattern and it’s supercharged with RXJS.
 Visit the following resources to learn more:
 
-- [@official@What is NGRX ? - ngrx.io ](https://ngrx.io/)
-- [@article@Details about NGRX - Medium ](https://ahmedrebai.medium.com/introduction-to-state-management-with-ngrx-and-angular-91f4ff27ec9f)
-- [@video@Practise of NGRX](https://www.youtube.com/watch?v=f97ICOaekNU)
+- [@official@What is NGRX?](https://ngrx.io/docs)
+- [@article@Angular NgRx Store and Effects Crash Course](https://blog.angular-university.io/angular-ngrx-store-and-effects-crash-course/)
+- [@video@Angular state management with NgRx](https://www.youtube.com/watch?v=a3_GW3RBqn0)
+- [@video@Angular NgRx Signal Store Crash Course (For NgRx Beginners)](https://www.youtube.com/watch?v=HqxY0JPlh54)
+- [@video@NgRx Best Practices](https://youtu.be/yYiO-kjmLAc?si=7J_JkOdbyocfb5m_)
+- [@video@Angular Course with NgRx - Building Angular Project From Scratch](https://www.youtube.com/watch?v=vcfZ0EQpYTA)