Update learning.md

[FredrikHedman]

Dead link updated with the new location for Quant Econ tutorial.

Description

Attribution

• I am listed in .zenodo.json (see How to get acknowledged #3503)

Things to consider

• Does it work on log scales?
• Does it work in layouts?
• Does it work in recipes?
• Does it work with multiple series in one call?
• PR includes or updates tests?
• PR includes or updates documentation?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.40%. Comparing base (0b9a176) to head (83d1e8a).
Report is 1 commits behind head on v2.

Additional details and impacted files

@@           Coverage Diff           @@
##               v2    #5037   +/-   ##
=======================================
  Coverage   78.40%   78.40%           
=======================================
  Files          78       78           
  Lines        8262     8262           
=======================================
  Hits         6478     6478           
  Misses       1784     1784           

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[t-bltg]

Thanks !