[Doc] Typo and grammatical fixes in vector documentation (#1695)
[Doc] Typo and grammatical fixes in vector documentation (#1695)

* Fixed typo "has no common" -> "has nothing in common"

* Typo and grammatical fixes

* clean

Co-authored-by: 彭于斌 <2430f41068eeee88e52afd712d0bb273833fdbfe@qq.com>
yuanming-hu/taichi,yuanming-hu/taichi,yuanming-hu/taichi,yuanming-hu/taichi