Fix/documentation url of statsforecast models

[cnhwl]

Checklist before merging this PR:

• Mentioned all issues that this PR fixes or addresses.
• Summarized the updates of this PR under Summary.
• Added an entry under Unreleased in the Changelog.

Summary

Update the Documentation URL of Statsforecast models.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.10%. Comparing base (47dd2fc) to head (1a7aca1).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2610      +/-   ##
==========================================
- Coverage   94.15%   94.10%   -0.06%     
==========================================
  Files         139      139              
  Lines       14992    14992              
==========================================
- Hits        14116    14108       -8     
- Misses        876      884       +8     

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[dennisbader]

Thanks a lot @cnhwl, looks great :) 🚀