Update vizier example

[lmichel]

• Fix a bug in the processing the space frame equinox.
• Update of the Hipparcos catalogue (I/311/hip2) used as an example in viewer.rst

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.04%. Comparing base (76a9ce9) to head (6971214).
⚠️ Report is 8 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #710      +/-   ##
==========================================
+ Coverage   84.03%   84.04%   +0.01%     
==========================================
  Files          79       79              
  Lines        8529     8537       +8     
==========================================
+ Hits         7167     7175       +8     
  Misses       1362     1362              

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[ManonMarchand]

Looks good to me. I'd remove the mention of the catalog change from the changelog: it's not really a bug, it's just recommended to use to recalculated version. And it's only in the documentation so it's ok if this is not mentioned in the changelog.