minor #29711 Fixed minor typos in an error message (javiereguiluz)

This PR was squashed before being merged into the 4.2 branch (closes #29711).

Discussion
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Fixed minor typos in an error message

| Q             | A
| ------------- | ---
| Branch?       | 4.2
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no     <!-- see https://symfony.com/bc -->
| Deprecations? | no <!-- don't forget to update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tests pass?   | yes    <!-- please add some, will be required by reviewers -->
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

Commits
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913fdbe107 Fixed minor typos in an error message