Resolve "Romeo SMT enabled by default?"

Closes #476 (closed)

To get 256 cores per node --hint=multithread has to be specified or SLURM returns salloc: error: Job submit/allocate failed: Requested node configuration is not available This shows SMT is diabled per default and has to be enabled by the user

Furthermore I added a note how to activate SMT on alpha partition similar to romeo

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

@@ -17,9 +17,8 @@ cores are available per node.
 
 !!! note
 
-    Multithreading is disabled per default in a job. To make use of it include the Slurm parameter
-    `--hint=multithread` in your job script or command line, or set the environment variable
-    `SLURM_HINT=multithread` before job submission.
+        Multithreading is disabled per default in a job.
+        See the [Slurm page](slurm.md) on how to enable it.
 
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