fix: update doc links

[wass3r]

goes along with go-vela/docs#424

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.02%. Comparing base (76a66e7) to head (1e8c269).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #388   +/-   ##
=======================================
  Coverage   96.02%   96.02%           
=======================================
  Files          69       69           
  Lines        5382     5382           
=======================================
  Hits         5168     5168           
  Misses        138      138           
  Partials       76       76           

Files with missing lines	Coverage Δ
yaml/build.go	91.66% <ø> (ø)
yaml/metadata.go	100.00% <ø> (ø)
yaml/ruleset.go	100.00% <ø> (ø)
yaml/secret.go	95.69% <ø> (ø)
yaml/service.go	89.74% <ø> (ø)
yaml/stage.go	96.42% <ø> (ø)
yaml/step.go	95.55% <ø> (ø)
yaml/template.go	73.07% <ø> (ø)
yaml/ulimit.go	100.00% <ø> (ø)
yaml/volume.go	100.00% <ø> (ø)
... and 1 more