link translation DIC tags to components section

The `translation.loader` and `translation.dumper` DIC tags link to the
respective sections in the Translation component documentation.
minor #4247 [Reference] link translation DIC tags to components section (xabbuh)

This PR was merged into the 2.3 branch.

Discussion
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[Reference] link translation DIC tags to components section

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | all
| Fixed tickets |

The `translation.loader` and `translation.dumper` DIC tags link to the respective sections in the Translation component documentation (in addition to the changes done in #4166).

Commits
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9790975 link translation DIC tags to components section