Pontoon: Update Punjabi (pa-IN) localization of Pontoon Intro
Pontoon: Update Punjabi (pa-IN) localization of Pontoon Intro

Localization authors:
- Amanpreet Alam <amanpreet.alam@gmail.com>
- Mangat veer Sagar <mnvsgr0@gmail.com>

jotes/pontoon-intro,jotes/pontoon-intro,jotes/pontoon-intro