fix: allow multiple ctas on articles

[arzljames]

Description

Allow multiple CTA components in Mindshare articles. Also, update the CTA Button text on the demo page form and top bar.

Fixes #2395

Type of change

Please delete options that are not relevant.

• [x] Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

• [x] Manual Test

Screenshots / Screen recording