huanghuafr

### Suggested merge commit message ([convention](https://ckeditor.com/docs/ckeditor5/latest/framework/contributing/git-commit-message-convention.html)) Type: Message. Closes #000. --- ### Additional information _For example – encountered issues, assumptions you had to make, other affected tickets, etc._

Formats the input source code by adding appropriate indentation to specific HTML elements.

1

Formats the input source code by adding appropriate indentation to specific HTML elements. ### Suggested merge commit message ([convention](https://ckeditor.com/docs/ckeditor5/latest/framework/contributing/git-commit-message-convention.html)) Type: Message. Closes #000. --- ### Additional information _For example –...