Update links to workshop slides

[blnicho]

Summary/Motivation:

Update link to Pyomo workshop slides including edits from December 2023.

Legal Acknowledgement

By contributing to this software project, I have read the contribution guide and agree to the following terms and conditions for my contribution:

1. I agree my contributions are submitted under the BSD license.
2. I represent I am authorized to make the contributions and grant the license. If my employer has rights to intellectual property that includes these contributions, I represent that I have received permission to make contributions and grant the required license on behalf of that employer.

[mrmundt]

Thoughts on updating the RTD? https://pyomo.readthedocs.io/en/stable/tutorial_examples.html

[blnicho]

Thoughts on updating the RTD? https://pyomo.readthedocs.io/en/stable/tutorial_examples.html

Sure I can do that.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (ea3e3ee) 88.10% compared to head (125a656) 88.09%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3079      +/-   ##
==========================================
- Coverage   88.10%   88.09%   -0.01%     
==========================================
  Files         774      774              
  Lines       91538    91538              
==========================================
- Hits        80645    80637       -8     
- Misses      10893    10901       +8     

Flag	Coverage Δ
linux	85.45% <ø> (ø)
osx	75.47% <ø> (ø)
other	85.63% <ø> (ø)
win	82.79% <ø> (-0.01%)	⬇️

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