chore: fix iclude guards and update xsd comments

[HansRobo]

Description

Abstract

• fix iclude guards
• update xsd comments

Background

The original pull-request for ParameterValueDistribution is too big to review.
So, I divide it to some small pull-requests.
This is the first one.

References

#1253

Destructive Changes

None

Known Limitations

None

[github-actions]

Checklist for reviewers ☑️

All references to "You" in the following text refer to the code reviewer.

• Is this pull request written in a way that is easy to read from a third-party perspective?
• Is there sufficient information (background, purpose, specification, algorithm description, list of disruptive changes, and migration guide) in the description of this pull request?
• If this pull request contains a destructive change, does this pull request contain the migration guide?
• Labels of this pull request are valid?
• All unit tests/integration tests are included in this pull request? If you think adding test cases is unnecessary, please describe why and cross out this line.
• The documentation for this pull request is enough? If you think adding documents for this pull request is unnecessary, please describe why and cross out this line.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud