Replace link to hardware section

doc.zih.tu-dresden.de/docs/jobs_and_resources/migration_2023.md

@@ -6,7 +6,8 @@ All components of Taurus will be dismantled step by step.
 
 ### New Hardware
 
-The new HPC system "Barnard" from Bull comes with these main properties:
+The new HPC system [Barnard](hardware_overview_2023.md#barnard-intel-sapphire-rapids-cpus) from Bull
+comes with these main properties:
 
 * 630 compute nodes based on Intel Sapphire Rapids
 * new Lustre-based storage systems
@@ -14,8 +15,6 @@ The new HPC system "Barnard" from Bull comes with these main properties:
 * To help our users to find the best location for their data we now use the name of
 animals (size, speed) as mnemonics.
 
-More details can be found in the [overview](/jobs_and_resources/hardware_overview_2023).
-
 ### New Architecture
 
 Over the last decade we have been running our HPC system of high heterogeneity with a single