[windows] Update event code in powershell_operational ingest pipeline processor description

[Doserdog]

• Bug

What does this PR do?

Updates ingest pipeline processor description with correct event code.

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• I have verified that Kibana version constraints are current according to guidelines.

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💚 CLA has been signed

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Build stats

• Start Time: 2023-03-15T22:29:40.073+0000

• Duration: 17 min 20 sec

Test stats 🧪

Test	Results
Failed	0
Passed	129
Skipped	0
Total	129

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[Doserdog]

/test

[efd6]

/test

[elasticmachine]

🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (4/4)	💚
Files	87.5% (7/8)	👎 -12.5
Classes	87.5% (7/8)	👎 -12.5
Methods	83.516% (76/91)	👎 -16.484
Lines	92.748% (5103/5502)	👍 2.527
Conditionals	100.0% (0/0)	💚

[nicpenning]

You will likely need to bump this up to 1.18.1 due to a feature that was recently merged. #5384

[nicpenning]

Make sure to update here as well.

[Doserdog]

/test

[nicpenning]

You still need to update the changelog and manifest. :)

[Doserdog]

Thanks!

/test

[efd6]

/test

[nicpenning]

Looks like another System integration was updated and commited to pass this again. You will probably need to update the version again :( Is there a better way to handle this?

#5511

[efd6]

/test

[elasticmachine]

Package windows - 1.19.1 containing this change is available at https://epr.elastic.co/search?package=windows