fix: removed header from completion script (#4049)

[povilasv]

Pull request description

git cherry-pick 26ba438

Checklist (choose whats happened)

• breaking change! (describe)
• tested locally
• tested on cluster
• added new dependencies
• updated the docs
• added a test

Breaking changes

Changes

Fixes

[netlify]

✅ Deploy Preview for testkube-docs-preview canceled.

Name	Link
🔨 Latest commit	1307013
🔍 Latest deploy log	https://app.netlify.com/sites/testkube-docs-preview/deploys/648c3344abe33f0008884070

[codecov-commenter]

Codecov Report

Patch and project coverage have no change.

Comparison is base (93c19e4) 28.09% compared to head (93c19e4) 28.09%.

❗ Current head 93c19e4 differs from pull request most recent head 1307013. Consider uploading reports for the commit 1307013 to get more accurate results

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Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4054   +/-   ##
=======================================
  Coverage   28.09%   28.09%           
=======================================
  Files         207      207           
  Lines       16413    16413           
=======================================
  Hits         4612     4612           
  Misses      11350    11350           
  Partials      451      451           

Flag	Coverage Δ
integrationtests	8.06% <0.00%> (ø)
unittests	22.27% <0.00%> (ø)

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