SCANPY-234 Fix help suggestions displayed when invoking pysonar without arguments

[marc-jasper-sonarsource]

No description provided.

[sonar-review-alpha]

Summary

This PR fixes inaccuracies in the help message shown when pysonar is invoked without required arguments

What reviewers should know

Summary

This PR fixes inaccuracies in the help message shown when pysonar is invoked without required arguments:

1. Corrects CLI syntax: Updates the command-line example from --sonar.projectKey=myproject to --sonar-project-key=myproject (CLI args use hyphens, not dots)
2. Adds missing method: Documents the -D parameter approach for specifying analysis parameters (e.g., -Dsonar.projectKey=myproject), which wasn't previously mentioned

These changes ensure users receive accurate guidance on all available configuration methods when the scanner fails due to missing required properties.

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• Generate Walkthrough
• Generate Diagram

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[hashicorp-vault-sonar-prod]

SCANPY-234

[sonarqube-next]

Quality Gate passed for 'Python Scanner'

Issues
0 New issues
0 Fixed issues
0 Accepted issues

Measures
0 Security Hotspots
0 Dependency risks
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarQube

[thomas-serre-sonarsource]

LGTM!