Update partner_descriptions.json

[vipinsj]

Partner_description_for_Arcanum

Description

Describe your changes in detail following the commit message guidelines

Rationale

Phabricator Ticket

How Has This Been Tested?

Screenshots of your changes (if appropriate):

Types of changes

What types of changes does your code introduce? Add an x in all the boxes that apply:

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Minor change (fix a typo, add a translation tag, add section to README, etc.)