.\scour\scour.py fix missing whitespace, line 3632 flake8

[44xtc44]

Hello,
After forking and cloning the repo I was reading "CONTRIBUTING.md" and I executed

$ make check
This revealed a flake8 error in master. Seems .travis.yml is offline.
We could add a github actions workflow to show a red or green badge.
.\scour\scour.py:3632:7: E275 missing whitespace after keyword

I opened PR #314 for discussion, fixing, or rejecting.
Purpose is to get clean tests (also with tox) for the future sphinx documentation made from README.md.
Request #116 documentation.
The documentation will get a separate PR for discussion.

Best regards