Update information about Zenodo in the instructions of release.md

[mhucka]

Change:

• Update info about the Zenodo process
• Fix a reference to a slightly incorrect variable name
• Add some missing backticks to references to main

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.14%. Comparing base (7c8f58f) to head (4f6b028).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7191      +/-   ##
==========================================
- Coverage   98.14%   98.14%   -0.01%     
==========================================
  Files        1100     1100              
  Lines       96191    96191              
==========================================
- Hits        94407    94403       -4     
- Misses       1784     1788       +4     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.