Updated outdated docs about NOx conversions.

[mikapfl]

Pull request

Please confirm that this pull request has done the following:

• Tests added
• Documentation added (where applicable)
• Example added (either to an existing notebook or as a new notebook, where applicable)
• Description in CHANGELOG.rst added

NOx is not a simple alias for NO2 any more. Update docs accordingly.

Prompted by pik-primap/primap2#96

[codecov]

Codecov Report

Merging #34 (a925578) into master (ad21956) will not change coverage.
The diff coverage is n/a.

❗ Current head a925578 differs from pull request most recent head 646f5c0. Consider uploading reports for the commit 646f5c0 to get more accurate results

@@            Coverage Diff            @@
##            master       #34   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            3         3           
  Lines          122       122           
  Branches        19        19           
=========================================
  Hits           122       122           

Impacted Files	Coverage Δ
src/openscm_units/_unit_registry.py	100.00% <ø> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update ad21956...646f5c0. Read the comment docs.

[mikapfl]

The linting failure is fixed in 0903fa5 . I think including it here as well would cause merge conflicts later on?

[mikapfl]

Ah, no, sorry, other problem. Apparently, a newer black version. May I interest you in https://pre-commit.ci/ for auto-fixing black commits?

[mikapfl]

The liniting failure which is now left is actually 0903fa5 .

[znicholls]

May I interest you in https://pre-commit.ci/ for auto-fixing black commits?

Ye sure

I think including it here as well would cause merge conflicts later on?

Ye up to you if you want to just wait for #33 or rebase #33 later

[znicholls]

awesome thanks!