Fix #6508 - Add skaffold apply to CLI docs header

[verbanicm]

Fixes: #6508

Description
Added skaffold apply to CLI docs and ran generate-man.sh

User facing changes (remove if N/A)
CLI Docs will now show skaffold apply in header

[MarlonGamez]

LGTM 👍🏼 I'm rerunning the failed travis jobs

[codecov]

Codecov Report

Merging #6509 (3ebf487) into main (a99ffc5) will increase coverage by 0.14%.
The diff coverage is 95.12%.

@@            Coverage Diff             @@
##             main    #6509      +/-   ##
==========================================
+ Coverage   70.27%   70.41%   +0.14%     
==========================================
  Files         510      515       +5     
  Lines       22988    23127     +139     
==========================================
+ Hits        16154    16286     +132     
- Misses       5776     5783       +7     
  Partials     1058     1058              

Impacted Files	Coverage Δ
pkg/skaffold/schema/latest/v1/config.go	62.16% <ø> (ø)
pkg/skaffold/hooks/types.go	75.00% <75.00%> (ø)
pkg/skaffold/deploy/helm/deploy.go	77.91% <100.00%> (+1.09%)	⬆️
pkg/skaffold/deploy/kubectl/kubectl.go	64.07% <100.00%> (ø)
pkg/skaffold/deploy/kustomize/kustomize.go	74.51% <100.00%> (+1.98%)	⬆️
pkg/skaffold/hooks/deploy.go	85.71% <100.00%> (ø)
pkg/skaffold/log/stream/stream.go	71.42% <0.00%> (-14.29%)	⬇️
pkg/skaffold/debug/apply_transforms.go	23.07% <0.00%> (-12.83%)	⬇️
cmd/skaffold/app/cmd/inspect_tests.go	63.63% <0.00%> (-3.04%)	⬇️
pkg/skaffold/test/test_factory.go	76.19% <0.00%> (-1.09%)	⬇️
... and 17 more

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