Fix broken references

They were missed in the reorganisation of [1].

[1] #77

docs/modules/ROOT/pages/index.adoc

@@ -7,9 +7,9 @@ image::syn.png[]
 
 > Project Syn is a pre-integrated set of tools to provision, update, backup, observe and react/alert production applications on Kubernetes and in the cloud. It supports DevOps through full self-service and automation using containers, Kubernetes and GitOps.
 
-See xref:features.adoc[features] for a comprehensive description of all the possibilities and xref:architecture.adoc[architecture] for an insight into the Project Syn architecture. You would like to get in touch with us? See xref:community.adoc[community] for ways how to do that.
+See xref:about/features.adoc[features] for a comprehensive description of all the possibilities and xref:about/architecture.adoc[architecture] for an insight into the Project Syn architecture. You would like to get in touch with us? See xref:about/community.adoc[community] for ways how to do that.
 
-TIP: The xref:getting-started.adoc[Getting Started] gives you a glimpse into Project Syn. Give it a try!
+TIP: The xref:tutorials/getting-started.adoc[Getting Started] gives you a glimpse into Project Syn. Give it a try!
 
 [discrete]
 == Overview of Project Syn tools

docs/modules/ROOT/pages/tutorials/getting-started.adoc

@@ -2,7 +2,7 @@
 
 This guide helps to get started with the various Project Syn tools.
 
-TIP: Have a look at xref:features.adoc[features] and xref:architecture.adoc[architecture] first to get an idea about Project Syn, this helps to understand what we're doing here.
+TIP: Have a look at xref:about/features.adoc[features] and xref:about/architecture.adoc[architecture] first to get an idea about Project Syn, this helps to understand what we're doing here.
 
 == Requirements
 
@@ -43,7 +43,7 @@ kubectl cluster-info
 
 Lieutenant is the central inventory service all Project Syn managed clusters report to, it consists of the Lieutenant _Operator_ and the Lieutenant _API_.
 
-As you can see on the xref:architecture.adoc[architecture] diagram, Lieutenant is the central API which is being used by all other Project Syn tools. Therefore it needs to be installed first so that all other components are actually able to do their job.
+As you can see on the xref:about/architecture.adoc[architecture] diagram, Lieutenant is the central API which is being used by all other Project Syn tools. Therefore it needs to be installed first so that all other components are actually able to do their job.
 
 Create a namespace to host the Operator and the API
 [source,shell]