fix linter errors

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

@@ -25,7 +25,7 @@ conda manager is included in all versions of Anaconda and Miniconda.
 ## Python Virtual Environment
 
 This example shows how to start working with **virtualenv** and Python virtual environment (using
-the module system). 
+the module system).
 
 ??? hint
     We recommend to use [workspaces](../../data_lifecycle/workspaces) for your virtual environments.

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

@@ -43,7 +43,7 @@ marie@ml$ module load TensorFlow
 Module TensorFlow/2.3.1-fosscuda-2019b-Python-3.7.4 and 47 dependencies loaded.
 ```
 
-Now we can use TensorFlow. In the following example, we create a python virtual environment and 
+Now we can use TensorFlow. In the following example, we create a python virtual environment and
 import TensorFlow:
 
 !!! example
@@ -51,12 +51,12 @@ import TensorFlow:
     marie@ml$ ws_allocate -F scratch python_virtual_environment 1
     Info: creating workspace.
     /scratch/ws/1/python_virtual_environment
-    [...] 
+    [...]
     marie@ml$ which python    #check which python are you using
     /sw/installed/Python/3.7.2-GCCcore-8.2.0
-    marie@ml$ virtualenv --system-site-packages /scratch/ws/1/python_virtual_environment/env    #create virtual environment "env" which inheriting with global site packages
+    marie@ml$ virtualenv --system-site-packages /scratch/ws/1/python_virtual_environment/env
     [...]
-    marie@ml$ source /scratch/ws/1/python_virtual_environment/env/bin/activate    #activate virtual environment "env". Example output: (env) bash-4.2$
+    marie@ml$ source /scratch/ws/1/python_virtual_environment/env/bin/activate
     marie@ml$ python -c "import tensorflow as tf; print(tf.__version__)"
     [...]
     2.3.1