Fixed doc of InitAclCommand
minor #10497 [SecurityBundle] Fixed doc of InitAclCommand (dunglas)

This PR was submitted for the 2.3-dev branch but it was merged into the 2.3 branch instead (closes #10497).

Discussion
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[SecurityBundle] Fixed doc of InitAclCommand

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | no
| License       | MIT
| Doc PR        | n/a

Use {@inheritdoc}. Consistency with https://github.com/symfony/symfony/pull/9990#discussion-diff-10219606.

Commits
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aa49009 [SecurityBundle] Fixed doc of InitAclCommand