[pull] indonesian from master (#14)

* fix: fixed custom directives migration guide

* Update the GitHub repo link to `vue-next` (vuejs#672)

* Update introduction.md (vuejs#673)

* Improve formatting of teleport.md (vuejs#674)

This switches a link to using VideoLesson, which should make
it look a lot better. It also fixes a small punctuation typo.

* Fix a typo (vuejs#675)

Co-authored-by: NataliaTepluhina <[email protected]>
Co-authored-by: YuLe <[email protected]>
Co-authored-by: Alexander Sokolov <[email protected]>
Co-authored-by: Aris Merchant <[email protected]>
Co-authored-by: Kid <[email protected]>

Author: 6 people