L2SS-357:Corrected error in recv-sim Dockerfile and adjusted notebook

docker-compose/recv-sim/Dockerfile

@@ -6,5 +6,5 @@ RUN apt-get update && apt-get install -y python3 python3-pip python3-yaml git &&
     pip3 install -r requirements.txt && \
     git clone --depth 1 --branch master https://git.astron.nl/lofar2.0/pypcc
 
-WORKDIR /recv
+WORKDIR /pypcc
 CMD ["python3","pypcc2.py","--simulator"]