[es] Remove some vertical space between lines of text

Author: Arhell

Diff for: content/es/docs/tutorials/_index.md

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 ## Esenciales
 
 * [Kubernetes Basics](/docs/tutorials/kubernetes-basics/) se trata de un tutorial interactivo en profundidad para entender Kubernetes y probar algunas funciones básicas.
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 * [Scalable Microservices with Kubernetes (Udacity)](https://www.udacity.com/course/scalable-microservices-with-kubernetes--ud615)
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 * [Introduction to Kubernetes (edX)](https://www.edx.org/course/introduction-kubernetes-linuxfoundationx-lfs158x#)
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 * [Hello Minikube](/es/docs/tutorials/hello-minikube/)
 
 ## Configuración
 
 * [Ejemplo: Configurando un Microservicio en Java](/docs/tutorials/configuration/configure-java-microservice/)
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 * [Configuring Redis Using a ConfigMap](/docs/tutorials/configuration/configure-redis-using-configmap/)
 
 ## Aplicaciones Stateless
 
 * [Exposing an External IP Address to Access an Application in a Cluster](/docs/tutorials/stateless-application/expose-external-ip-address/)
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 * [Example: Deploying PHP Guestbook application with Redis](/docs/tutorials/stateless-application/guestbook/)
 
 ## Aplicaciones Stateful
 
 * [StatefulSet Basics](/docs/tutorials/stateful-application/basic-stateful-set/)
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 * [Example: WordPress and MySQL with Persistent Volumes](/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/)
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 * [Example: Deploying Cassandra with Stateful Sets](/docs/tutorials/stateful-application/cassandra/)
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 * [Running ZooKeeper, A CP Distributed System](/docs/tutorials/stateful-application/zookeeper/)
 
 ## Clústers
 
 * [AppArmor](/docs/tutorials/clusters/apparmor/)
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 * [Seccomp](/docs/tutorials/clusters/seccomp/)
 
 ## Servicios
 
 * [Using Source IP](/docs/tutorials/services/source-ip/)
 
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 ## {{% heading "whatsnext" %}}
 
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 Si quieres escribir un tutorial, revisa [utilizando templates](/docs/home/contribute/page-templates/) para obtener información sobre el tipo de página y la plantilla de los tutotriales.
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