fix: all index

Author: tomalaforge

docs/src/content/docs/es/index.mdx

@@ -13,7 +13,7 @@ hero:
  icon: right-arrow
  variant: primary
  - text: Ir al Desafío más reciente
- link: /es/challenges/angular/50-bug-effect-signal/
+ link: /es/signal/angular/50-bug-effect-signal/
  icon: rocket
  - text: Dar una estrella
  link: https://github.com/tomalaforge/angular-challenges

docs/src/content/docs/fr/index.mdx

@@ -13,7 +13,7 @@ hero:
  icon: right-arrow
  variant: primary
  - text: Aller au dernier Challenge
- link: /fr/challenges/angular/50-bug-effect-signal/
+ link: /fr/challenges/signal/50-bug-effect-signal/
  icon: rocket
  - text: Donne une étoile
  link: https://github.com/tomalaforge/angular-challenges

docs/src/content/docs/pt/index.mdx

@@ -13,7 +13,7 @@ hero:
  icon: right-arrow
  variant: primary
  - text: Ir para o desafio mais recente
- link: /pt/challenges/angular/50-bug-effect-signal/
+ link: /pt/challenges/signal/50-bug-effect-signal/
  icon: rocket
  - text: Dar uma estrela
  link: https://github.com/tomalaforge/angular-challenges

docs/src/content/docs/ru/index.mdx

@@ -13,7 +13,7 @@ hero:
  icon: right-arrow
  variant: primary
  - text: Перейти к последней задаче
- link: /ru/challenges/angular/50-bug-effect-signal/
+ link: /ru/challenges/signal/50-bug-effect-signal/
  icon: rocket
  - text: Добавить звезду
  link: https://github.com/tomalaforge/angular-challenges