DOC: Small changes to PaperSize notes

[j-t-1]

Plus one typo in xmp.py.

[j-t-1]

This could also be amended, but unsure how to do so:

# Additionally, A0 is defined to have an area of 1 m**2

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.88%. Comparing base (e694d55) to head (b9ef7fd).
Report is 1 commits behind head on main.

Additional details and impacted files

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##             main    #2834   +/-   ##
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  Coverage   95.88%   95.88%           
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  Files          51       51           
  Lines        8576     8576           
  Branches     1696     1696           
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  Hits         8223     8223           
  Misses        210      210           
  Partials      143      143           

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[pubpub-zz]

This could also be amended, but unsure how to do so:

# Additionally, A0 is defined to have an area of 1 m**2

what about adding link to https://en.wikipedia.org/wiki/ISO_216

[j-t-1]

This could also be amended, but unsure how to do so:
# Additionally, A0 is defined to have an area of 1 m**2

what about adding link to https://en.wikipedia.org/wiki/ISO_216

Good idea; done.

[stefan6419846]

It seems like the last commit did not went through?