Ecthelion-F

A Small Typo in The Chinese Version of The Art of Linear Algebra

2

In section 6.4, a symmetric matrix S (对称矩阵S) seems to be typed as 对乘矩阵S. This appears on [line 578](https://github.com/kenjihiranabe/The-Art-of-Linear-Algebra/blob/main/The-Art-of-Linear-Algebra-zh-CN.tex#L578) of `The-Art-of-Linear-Algebra-zh-CN.tex`