[Content updates] Unauthenticated home

[natalia-fitzgerald]

The purpose of this ticket is to compile content changes to the unauthenticated home page.

1. Update text in get started section

Updated text:

Confirm that your financial institution has a Legal Entity Identifier (LEI)
In order to begin using the platform you must have an LEI for your financial institution. If your organization does not have an LEI, visit the Global LEI Foundation (GLEIF) to get an LEI._

Beta	Update