fix example of constraint

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

@@ -501,9 +501,10 @@ as user to specify the requirements. These features should be thought of as chan
 (e.g., a filesystem get stuck on a certain node).
 
 A feature can be used with the Slurm option `-C, --constraint=<ARG>` like
-`srun --constraint=fs_lustre_scratch2 ...` with `srun` or `sbatch`. Combinations like
-`--constraint="fs_beegfs_global0`are allowed. For a detailed description of the possible
-constraints, please refer to the [Slurm documentation](https://slurm.schedmd.com/srun.html).
+`srun --constraint="fs_lustre_scratch2" ...` with `srun` or `sbatch`.
+
+Combinations like `--constraint="fs_beegfs|fs_lustre_ssd"` are allowed. For a detailed description
+of the possible constraints, please refer to the [Slurm documentation](https://slurm.schedmd.com/srun.html#OPT_constraint).
 
 !!! hint