docs: update math API docs

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2026-03-20 02:35:15 +08:00
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# Vector3::operator-=
```cpp
Vector3& operator-=(const Vector3& other)
```
向量减法赋值,从当前向量减去 `other` 的分量。
**参数:**
- `other` - 要减的向量
**返回:** `Vector3&` - 引用到修改后的当前向量
**线程安全:**
**复杂度:** O(1)
**示例:**
```cpp
Vector3 v(5.0f, 7.0f, 9.0f);
v -= Vector3(1.0f, 2.0f, 3.0f); // v = (4.0f, 5.0f, 6.0f)
```
## 相关文档
- [Vector3 类总览](vector3.md) - 返回类总览
- [`operator-`](operator_sub.md) - 减法运算
- [`operator+=`](operator_add_assign.md) - 加法赋值