Little correction for case 'ar'
bug #10735 [Translation] [PluralizationRules] Little correction for case 'ar' (klyk50)

This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closes #10735).

Discussion
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[Translation] [PluralizationRules] Little correction for case 'ar'

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

Commits
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ef85f4c Little correction for case 'ar'