Fix spelling mistakes.

[duchengyao]

Description

Fix spelling mistakes.

I have no permission to add skip-ci label.

Contributor Checklist

• Commit messages follow the project guidelines.
• The code follows the style guidelines of this project.
• N/A: Tests that thoroughly check the new feature have been added/Regression tests checking the bug and its fix have been added.
• N/A: Any new/modified methods have been properly documented using Doxygen.
• N/A: Fast DDS test suite has been run locally.
• N/A: Changes are ABI compatible.
• N/A: Changes are API compatible.
• N/A: Documentation builds and tests pass locally.
• N/A: New feature has been added to the versions.md file (if applicable).
• N/A: New feature has been documented/Current behavior is correctly described in the documentation.

Reviewer Checklist

• Check contributor checklist is correct.
• Check CI results: changes do not issue any warning.
• Check CI results: failing tests are unrelated with the changes.

[EduPonz]

Thanks @duchengyao!