Correct a typo: replace "then" by "the".
minor #4322 [Components][DependencyInjection] Correct a typo: replace "then" by "the" (fabschurt)

This PR was merged into the 2.3 branch.

Discussion
----------

[Components][DependencyInjection] Correct a typo: replace "then" by "the"

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | 2.3+
| Fixed tickets | n/a

Commits
-------

10776bb Correct a typo: replace "then" by "the".