[CSP] Update integration deployment instructions

[uri-weisman]

What does this PR do?

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.

Author's Checklist

• [ ]

How to test this PR locally

Related issues

Screenshots

[elasticmachine]

💚 Build Succeeded

the below badges are clickable and redirect to their specific view in the CI or DOCS

Expand to view the summary

Build stats

• Start Time: 2022-05-19T14:15:21.511+0000

• Duration: 14 min 42 sec

Test stats 🧪

Test	Results
Failed	0
Passed	1
Skipped	0
Total	1

🤖 GitHub comments

To re-run your PR in the CI, just comment with:

• /test : Re-trigger the build.

[elasticmachine]

🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (0/0)	💚
Files	100.0% (0/0)	💚 4.021
Classes	100.0% (0/0)	💚 4.021
Methods	33.333% (1/3)	👎 -55.306
Lines	100.0% (0/0)	💚 9.305
Conditionals	100.0% (0/0)	💚

[uri-weisman]

Closes elastic/cloudbeat#123

[tehilashn]

remove the "an" and change to higher
Note, this integration can be added only to Elastic agents with version 8.3 or higher.