Fix hostnames for barnard

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

@@ -56,7 +56,7 @@ The following questions may help to decide which cluster to use
 <!-- cluster_overview_table -->
 |Name|Description| DNS | Nodes | # Nodes | Cores per Node | Threads per Core | Memory per Node [in MB] | Memory per Core [in MB] | GPUs per Node
 |---|---|----|:---|---:|---:|---:|---:|---:|---:|
-|**Capella**<br>_2024_| GPU|`<node>.barnard.hpc.tu-dresden.de` |`c[1-144]` | 144 |64| 1 |768,000 | | 4 |
+|**Capella**<br>_2024_| GPU|`<node>.capella.hpc.tu-dresden.de` |`c[1-144]` | 144 |64| 1 |768,000 | | 4 |
 |**Barnard**<br>_2023_| CPU|`<node>.barnard.hpc.tu-dresden.de` |`n[1001-1630]` | 630 |104| 2 |515,000 |12,000 | 0 |
 |**Alpha**<br>_2021_| GPU |`<node>.alpha.hpc.tu-dresden.de`|`i[8001-8037]` |  37 | 48 | 2 | 990,000 | 10,312|  8  |
 |**Romeo**<br>_2020_| CPU |`<node>.romeo.hpc.tu-dresden.de`|`i[7001-7186]` | 186|128 | 2 | 505,000| 1,972 |  0  |