Updated the getting started with FORRT link to the published document

[karegapauline]

No description provided.

[github-actions]

👍 All image files/references (if any) are in webp format, in line with our policy.

[LukasWallrich]

Checked it in the staging environment and it looks good - thanks.

[richarddushime]

Sorry for pointing this late

but on the same page there is a link which is not updated with the published google docs version

in the following paragraph

If you are looking to a deep dive into FORRT, there are two main ways to learn about us. If you are interested in learning about what we do, check out our Publications page. If you want to learn about the intricacies of the FORRT organization, beyond what you can learn from the several pages in our About FORRT pages, amd before joining our Slack, we prepared a document for you: [Getting Started with FORRT](https://docs.google.com/document/d/17ECRs6J8spO3CU6siheGL8weQ-TzdyAUpXIiIE8cUeI). It is organized in terms of involvement with the FORRT organization.

to be updated with the same link here