fix: elaborate on "non-flux state management" (#2469)
fix: elaborate on "non-flux state management" (#2469)

* fix: elaborate on "non-flux state management"

close #1224

* fix: match subject plurality

* Update src/v2/style-guide/index.md

Co-Authored-By: Natalia Tepluhina <6c1d3067f60827395284e0c8421c203e48733e3c@gmail.com>

Co-authored-by: Natalia Tepluhina <6c1d3067f60827395284e0c8421c203e48733e3c@gmail.com>

Jinjiang/vuejs.org,vuejs-fr/vuejs.org,vuejs/vuejs.org,vuejs/vuejs.org,vuejs-fr/vuejs.org,Jinjiang/vuejs.org