chore: fix grammar in core/observer/index.js comments#9116

Merged

yyx990803 merged 2 commits intovuejs:devfrom

HusamElbashir:fix/observer-comments

Dec 1, 2018

Commits on Nov 27, 2018

chore: fix grammar in core/observer/index.js comments
HusamElbashir
authored

Commits on Dec 1, 2018

Update index.js
yyx990803
authored