fix links

doc.zih.tu-dresden.de/docs/software/python_virtual_environments.md

@@ -30,7 +30,7 @@ the module system).
 
 !!! hint
 
-    We recommend to use [workspaces](../../data_lifecycle/workspaces.md) for your virtual
+    We recommend to use [workspaces](../data_lifecycle/workspaces.md) for your virtual
     environments.
 
 At first, we check available Python modules and load the preferred version:

doc.zih.tu-dresden.de/docs/software/tensorflow.md

@@ -96,7 +96,7 @@ the notebook by pre-loading a specific TensorFlow module:
 
     You can also define your own Jupyter kernel for more specific tasks. Please read about Jupyter
     kernels and virtual environments in our
-    [JupyterHub](../../access/jupyterhub.md#creating-and-using-your-own-environment) documentation.
+    [JupyterHub](../access/jupyterhub.md#creating-and-using-your-own-environment) documentation.
 
 ## TensorFlow in Containers