docs: Update getting started link in README

[MikeShi42]

Which problem is this PR solving?

Getting started link pointed to 404

Short description of the changes

Updates getting started link

Type of change

Please delete options that are not relevant.

• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• Clicking on getting started link goes to js getting started docs

Checklist:

• Followed the style guidelines of this project
• Unit tests have been added
• Documentation has been updated

[pichlermarc]

Ah, there was some restructuring on the site
Thanks for updating this 👍

[codecov]

Codecov Report

Merging #4477 (7e709a6) into main (01348e6) will not change coverage.
The diff coverage is n/a.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4477   +/-   ##
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  Coverage   92.42%   92.42%           
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  Files         330      330           
  Lines        9520     9520           
  Branches     2031     2031           
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  Hits         8799     8799           
  Misses        721      721