Fix model graph node name to remove RV from end only and not the start

[cscheffler]

The model graph (graphviz) output currently strips the leading "V" from a "VonMises" random variable node. The reason is that the current code uses .strip("RV") to remove characters which is too aggressive. It has been replaced with a check to see if the node name ends with "RV" and to remove those two characters if it does.

There is also a minor typo where style = None was written as syle = None (the t is missing) but this has no impact since style is set to None earlier in the code anyway.

Bugfixes

• Fixed model graph node names to remove RV from end only and not the start.

[michaelosthege]

Thanks for the fix!

The changes look reasonable and once the CI pipeline goes green we can merge it 👍

[codecov]

Codecov Report

Merging #5953 (84ad3ec) into main (b2393d5) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #5953   +/-   ##
=======================================
  Coverage   89.54%   89.54%           
=======================================
  Files          73       73           
  Lines       13271    13273    +2     
=======================================
+ Hits        11883    11885    +2     
  Misses       1388     1388           

Impacted Files	Coverage Δ
pymc/__init__.py	100.00% <100.00%> (ø)
pymc/model.py	88.20% <100.00%> (ø)
pymc/model_graph.py	93.70% <100.00%> (+0.10%)	⬆️