Adopt naming for long-tem archive

doc.zih.tu-dresden.de/docs/data_lifecycle/intermediate_archive.md

 # Intermediate Archive
 
 With the "Intermediate Archive", ZIH is closing the gap between a normal disk-based filesystem and
-[Long-term Archive](preservation_research_data.md). The Intermediate Archive is a hierarchical
+[Long-term Archive](longterm_preservation.md). The Intermediate Archive is a hierarchical
 filesystem with disks for buffering and tapes for storing research data.
 
 Its intended use is the storage of research data for a maximal duration of 3 years. For storing the
 data after exceeding this time, the user has to supply essential metadata and migrate the files to
-the [Long-term Archive](preservation_research_data.md). Until then, she/he has to keep track of her/his
+the [Long-term Archive](longterm_preservation.md). Until then, she/he has to keep track of her/his
 files.
 
 Some more information:

doc.zih.tu-dresden.de/docs/data_lifecycle/preservation_research_data.md → doc.zih.tu-dresden.de/docs/data_lifecycle/longterm_preservation.md

-# Preservation of Research Data
+# Long-Term Preservation of Research Data
 
 ## Why should research data be preserved?
 

doc.zih.tu-dresden.de/docs/data_lifecycle/overview.md

@@ -46,7 +46,7 @@ filesystems.
 
 Keep in mind that every workspace has a storage duration. Thus, be careful with the expire date
 otherwise it could vanish. The core data of your project should be [backed up](#backup) and the most
-important data should be [archived](preservation_research_data.md).
+important data should be [archived (long-term preservation)](longterm_preservation.md).
 
 ### Backup
 
@@ -105,7 +105,7 @@ expected? (software and version)
 ### Metadata
 
 Another important aspect is the Metadata. It is sufficient to use
-[Metadata](preservation_research_data.md#what-are-meta-data) for your HPC project. Metadata
+[Metadata](longterm_preservation.md#what-are-meta-data) for your HPC project. Metadata
 standards, i.e.,
 [Dublin core](http://dublincore.org/resources/metadata-basics/),
 [OME](https://www.openmicroscopy.org/),

doc.zih.tu-dresden.de/docs/data_lifecycle/permanent.md

@@ -93,4 +93,4 @@ In case a quota is above its limits:
     - For later use (weeks...months) at the ZIH systems, build and zip tar
       archives with meaningful names or IDs and store them, e.g., in a workspace in the
       [warm archive](warm_archive.md) or an [archive](intermediate_archive.md)
-    - Refer to the hints for [long term preservation for research data](preservation_research_data.md)
+    - Refer to the hints for [long-term preservation for research data](longterm_preservation.md)