Updated pymc.Normal docstring

[sagartomar]

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For issue #5459

#DataUmbrellaPyMCSprint

[codecov]

Codecov Report

Merging #5487 (fedd5c5) into main (2b81f4e) will decrease coverage by 15.57%.
The diff coverage is n/a.

❗ Current head fedd5c5 differs from pull request most recent head 29240c2. Consider uploading reports for the commit 29240c2 to get more accurate results

@@             Coverage Diff             @@
##             main    #5487       +/-   ##
===========================================
- Coverage   81.47%   65.89%   -15.58%     
===========================================
  Files          81       81               
  Lines       14204    14204               
===========================================
- Hits        11572     9360     -2212     
- Misses       2632     4844     +2212     

Impacted Files	Coverage Δ
pymc/distributions/continuous.py	61.06% <ø> (-36.17%)	⬇️
pymc/step_methods/mlda.py	12.46% <0.00%> (-83.94%)	⬇️
pymc/ode/utils.py	17.85% <0.00%> (-82.15%)	⬇️
pymc/func_utils.py	22.50% <0.00%> (-65.00%)	⬇️
pymc/printing.py	22.22% <0.00%> (-63.64%)	⬇️
pymc/ode/ode.py	24.24% <0.00%> (-60.61%)	⬇️
pymc/step_methods/hmc/hmc.py	33.96% <0.00%> (-58.50%)	⬇️
pymc/distributions/censored.py	37.28% <0.00%> (-55.94%)	⬇️
pymc/distributions/bound.py	44.32% <0.00%> (-55.68%)	⬇️
pymc/distributions/discrete.py	52.01% <0.00%> (-47.75%)	⬇️
... and 24 more

[OriolAbril]

Suggested change

Defaults to 1 if neither sigma nor tau is specified.

only one of tau or sigma are used, I think it's better to leave the explanation as no value for tau or sigma -> sigma=1 (tau=1 is equivalent to sigma=1 but that might still be confusing for many pymc users)