Adjust example from beegfs to horse filesystem

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

@@ -119,7 +119,7 @@ additional Python packages and create an isolated runtime environment. We recomm
     marie@login.alpha$ srun --nodes=1 --cpus-per-task=1 --gres=gpu:1 --time=01:00:00 --pty bash -l
     marie@alpha$ ws_allocate -n python_virtual_environment -d 1
     Info: creating workspace.
-    /beegfs/ws/1/marie-python_virtual_environment
+    /horse/ws/1/marie-python_virtual_environment
     remaining extensions  : 2
     remaining time in days: 1
     marie@alpha$ module load release/23.04 GCCcore/11.3.0 GCC/11.3.0 OpenMPI/4.1.4 Python/3.10.4
@@ -130,13 +130,13 @@ additional Python packages and create an isolated runtime environment. We recomm
     /software/rome/r23.04/Python/3.10.4-GCCcore-11.3.0/bin/python
     marie@alpha$ pip list
     [...]
-    marie@alpha$ virtualenv --system-site-packages /beegfs/ws/1/marie-python_virtual_environment/my-torch-env
+    marie@alpha$ virtualenv --system-site-packages /horse/ws/1/marie-python_virtual_environment/my-torch-env
     created virtual environment CPython3.8.6.final.0-64 in 42960ms
-      creator CPython3Posix(dest=/beegfs/.global1/ws/marie-python_virtual_environment/my-torch-env, clear=False, global=True)
+      creator CPython3Posix(dest=/horse/.global1/ws/marie-python_virtual_environment/my-torch-env, clear=False, global=True)
       seeder FromAppData(download=False, pip=bundle, setuptools=bundle, wheel=bundle, via=copy, app_data_dir=~/.local/share/virtualenv)
         added seed packages: pip==21.1.3, setuptools==57.2.0, wheel==0.36.2
       activators BashActivator,CShellActivator,FishActivator,PowerShellActivator,PythonActivator,XonshActivator
-    marie@alpha$ source /beegfs/ws/1/marie-python_virtual_environment/my-torch-env/bin/activate
+    marie@alpha$ source /horse/ws/1/marie-python_virtual_environment/my-torch-env/bin/activate
     (my-torch-env) marie@alpha$ pip install torchvision==0.13.1
     [...]
     Installing collected packages: torchvision