docs: Fix broken links to user guide

[lukemanley]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.50%. Comparing base (0b1d520) to head (95d5930).
Report is 7 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #19989   +/-   ##
=======================================
  Coverage   79.49%   79.50%           
=======================================
  Files        1556     1556           
  Lines      216407   216407           
  Branches     2456     2456           
=======================================
+ Hits       172043   172048    +5     
+ Misses      43806    43801    -5     
  Partials      558      558           

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[rodrigogiraoserrao]

Thanks a lot for picking these up!
Only one tiny change requested :D

[codspeed-hq]

CodSpeed Performance Report

Merging #19989 will improve performances by 31.26%

_{Comparing lukemanley:docs-fix-broken-links (95d5930) with main (d9ea1d8)}

Summary

⚡ 1 improvements
✅ 40 untouched benchmarks

Benchmarks breakdown

	Benchmark	main	lukemanley:docs-fix-broken-links	Change
⚡	test_pdsh_q18	16.5 ms	12.6 ms	+31.26%

[rodrigogiraoserrao]

Thanks for these!