Link sibling orgs in the gsoc or ideas page

[bsipocz]

There are a few orgs/umbrellas that are hugely related to OA, we should cross link each other, the 3 main examples for 2022:

• numfocus
• psf
• tardis

[Ayushi271]

Hello, My sincere greetings
I am a beginner to open source and I want to work on this issue.

[Ayushi271]

@bsipocz I can't set up the local environment. Can you help me, please?

[Leneyxis]

@Ayushi271 In order to get started on building the site on your local host, you'll need Ruby and jekyll. Please do read the
https://github.com/OpenAstronomy/openastronomy.github.io#readme to get you better understanding of how to do this with minimal friction