Modify the style of the corresponding Markdown text display in the document to make it normally bold.

[LinQi0777]

Changes proposed in this pull request:

• Improve unreasonable formatting in documents： Modify the style of the corresponding Markdown text display in the document to make it normally bold.

---

Before committing this PR, I'm sure that I have checked the following options:

• [x] My code follows the code of conduct of this project.
• [x] I have self-reviewed the commit code.
• [x] I have (or in comment I request) added corresponding labels for the pull request.
• [ ] I have passed maven check locally : ./mvnw clean install -B -T1C -Dmaven.javadoc.skip -Dmaven.jacoco.skip -e.
• [x] I have made corresponding changes to the documentation.
• [ ] I have added corresponding unit tests for my changes.