Summary

This issue tracks the updating of copy and content related to the first iteration Observability landing page.

Tasks

• Remove/hide the Try it out section [Observability] Update landing page copy and content #69247
• Update introduction copy [Obs] Update Observability landing page text #69727
• Update contents around apps (logs, metrics etc.) [Obs] Update Observability landing page text #69727
• Update illustration (SVG, support dark mode, possibly another motif) @formgeist [Observability] Update landing page illustration #69888

@bmorelli25 Do you think you might have some bandwidth to help with improving the copy? The current texts are directly grabbed from our elastic.co webpages.

@cauemarcondes When you have time, could set up a PR that removes the Try it out section? We can use that for updating the copy and illustration when they're ready.

cc @asawariS