Fix broken links, add permalinks and correct typos

[pinoOgni]

This PR fixes some broken links in the devdocs and replaces them with permanent links. It also introduces some minor fixes.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 43.37%. Comparing base (c6bf74b) to head (5b34b3f).
⚠️ Report is 1 commits behind head on main.

❗ There is a different number of reports uploaded between BASE (c6bf74b) and HEAD (5b34b3f). Click for more details.

HEAD has 3 uploads less than BASE

Flag	BASE (c6bf74b)	HEAD (5b34b3f)
oats-test	3	2
k8s-integration-test	9	7

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #749      +/-   ##
==========================================
- Coverage   48.91%   43.37%   -5.54%     
==========================================
  Files         198      198              
  Lines       22519    22519              
==========================================
- Hits        11015     9768    -1247     
- Misses      10636    11942    +1306     
+ Partials      868      809      -59     

Flag	Coverage Δ
k8s-integration-test	37.94% <ø> (-6.44%)	⬇️
oats-test	27.33% <ø> (-2.32%)	⬇️

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[mariomac]

Amazing! Thanks