Fix CSPM onboarding doc

[uri-weisman]

fix typo

[github-actions]

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[github-actions]

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It looks like this PR modifies one or more .asciidoc files. These files are being migrated to Markdown, and any changes merged now will be lost. See the migration guide for details.

[mergify]

This pull request does not have a backport label. Could you fix it @uri-weisman? 🙏
To fixup this pull request, you need to add the backport labels for the needed
branches, such as:

• v7.x is the label to automatically backport to the 7.x branch.
• v7./d./d is the label to automatically backport to the 7./d branch. /d is the digit

NOTE: backport-skip has been added to this pull request.

[jmikell821]

Hi @uri-weisman — our main branch is frozen while we migrate over to our new docs system. I've copied this issue into elastic/docs-content#514, so we'll be sure to address it. I'll close this PR. Thanks!