Clean up check_eof

[Mab879]

Description:

1. Use raise SystemExit
2. Clean up file names
3. Clean up help text

Rationale:

Clean up the help text

[github-actions]

Start a new ephemeral environment with changes proposed in this pull request:

Fedora Environment

Oracle Linux 8 Environment

[github-actions]

🤖 A k8s content image for this PR is available at:
ghcr.io/complianceascode/k8scontent:11757
This image was built from commit: 04a1484

Click here to see how to deploy it

If you alread have Compliance Operator deployed:
utils/build_ds_container.py -i ghcr.io/complianceascode/k8scontent:11757

Otherwise deploy the content and operator together by checking out ComplianceAsCode/compliance-operator and:
CONTENT_IMAGE=ghcr.io/complianceascode/k8scontent:11757 make deploy-local

[codeclimate]

Code Climate has analyzed commit 04a1484 and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 59.3% (0.0% change).

View more on Code Climate.

[jan-cerny]

I have tried to remove some EOF from our Python code and the script detects it and it is able to fix it.