fix(version) use correct counter placeholder in documentation

[bgotink]

What's the problem this PR addresses?

The documentation mentions %d but the code uses %n.

berry/packages/plugin-version/sources/commands/version/apply.ts

Lines 76 to 78 in c64644a

	const prerelease = this.prerelease
	? typeof this.prerelease !== `boolean` ? this.prerelease : `rc.%n`
	: null;

How did you fix it?

Update the code

Checklist

• I have read the Contributing Guide.

• I have set the packages that need to be released for my changes to be effective.

• I will check that all automated PR checks pass before the PR gets reviewed.