fix typo in notebooks README

Author: maltanar

notebooks/README.md

@@ -8,5 +8,8 @@ git clone https://github.com/fastmachinelearning/qonnx
 cd qonnx
 virtualenv -p python3.8 venv
 source venv/bin/activate
-pip install -e .[testing, docs, notebooks]
+pip install -e .[testing,docs,notebooks]
+cd notebooks
+jupyter notebook .
+# follow the link printed in the console to bring up Jupyter
 ```