Add doi to recognised fields

[znichollscr]

Description

Checklist

Please confirm that this pull request has done the following:

• [x] Tests added
• [x] Documentation added (where applicable)
• [x] Changelog item added to changelog/

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 76.46%. Comparing base (3fb98da) to head (fa2ecf3). Report is 64 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #64 +/- ## ========================================== + Coverage 76.29% 76.46% +0.16% ========================================== Files 42 45 +3 Lines 1873 1929 +56 Branches 307 311 +4 ========================================== + Hits 1429 1475 +46 - Misses 354 363 +9 - Partials 90 91 +1 ```

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