[ZH] Cleanup Gameplay/Hit object

[CloneWith]

Self-check

• The changes are tested against the contribution checklist
• (translations only) The changes are reviewed on GitHub by a fluent speaker

Changes

• Mostly formatting changes (ones that cannot be rendered correctly on the website)
• Rewording

[TicClick]

Unsure whether to add the need_cleanup tag. Some ZH translations didn't have it.
@TicClick for this

the guidance is as follows: if a translation is messy or poorly translated, while the original article is fine, feel free to add needs_cleanup: true. if the original article has needs_cleanup: true in the first place, copy it over to the translation without a second thought.