addons enable cluster flag usage description wrong

[lixingchenDaoCloud]

What type of PR is this?

/kind cleanup

What this PR does / why we need it:

This cluster is used on the enable and disable command lines, and the description here obviously does not match the actual description of the cluster

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

[lixingchenDaoCloud]

/cc @carlory @wuyingjun-lucky

[wuyingjun-lucky]

Thank you for finding this. @lixingchenDaoCloud I am not sure the updated description is fit. @carlory @lonelyCZ can you help ?

[wuyingjun-lucky]

/lgtm

[codecov-commenter]

Codecov Report

Merging #2577 (4039fbf) into master (e7d4f46) will increase coverage by 0.08%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2577      +/-   ##
==========================================
+ Coverage   23.39%   23.48%   +0.08%     
==========================================
  Files         184      184              
  Lines       18484    18484              
==========================================
+ Hits         4325     4341      +16     
+ Misses      13812    13798      -14     
+ Partials      347      345       -2     

Flag	Coverage Δ
unittests	23.48% <ø> (+0.08%)	:arrow_up:

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

Impacted Files	Coverage Δ
pkg/util/serviceaccount.go	50.00% <0.00%> (+22.22%)	:arrow_up:

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[karmada-bot]

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