Fix mixture

[aloctavodia]

No description provided.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 12.50000% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 82.34%. Comparing base (b7b6de2) to head (9ae1414).

Files with missing lines	Patch %	Lines
preliz/distributions/mixture.py	12.50%	7 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #722      +/-   ##
==========================================
- Coverage   82.37%   82.34%   -0.04%     
==========================================
  Files         110      110              
  Lines        9571     9576       +5     
==========================================
+ Hits         7884     7885       +1     
- Misses       1687     1691       +4     

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