Fix: workflow example

[leejanee]

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

[codecov]

Codecov Report

Merging #2323 (0315d9a) into master (b60c16a) will increase coverage by 2.40%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2323      +/-   ##
==========================================
+ Coverage   55.69%   58.10%   +2.40%     
==========================================
  Files         124      164      +40     
  Lines       12861    16426    +3565     
==========================================
+ Hits         7163     9544    +2381     
- Misses       4879     5802     +923     
- Partials      819     1080     +261     

Flag	Coverage Δ
e2e-rollout-tests	32.70% <ø> (?)
unittests	55.89% <ø> (+0.20%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...pis/core.oam.dev/v1alpha2/zz_generated.deepcopy.go	5.91% <0.00%> (ø)
pkg/webhook/core.oam.dev/register.go	100.00% <0.00%> (ø)
apis/standard.oam.dev/v1alpha1/rollout_state.go	71.50% <0.00%> (ø)
pkg/utils/errors/resourcetracker.go	0.00% <0.00%> (ø)
pkg/clustermanager/cluster_manager.go	0.00% <0.00%> (ø)
apis/core.oam.dev/groupversion_info.go	100.00% <0.00%> (ø)
apis/core.oam.dev/v1beta1/register.go	93.33% <0.00%> (ø)
apis/types/capability.go	0.00% <0.00%> (ø)
apis/core.oam.dev/v1beta1/application_types.go	20.00% <0.00%> (ø)
apis/core.oam.dev/v1beta1/conversion.go	0.00% <0.00%> (ø)
... and 91 more

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