minor symfony#16945 add and correct armenian translations (azatyan)

This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closes symfony#16945).

Discussion
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add and correct armenian translations

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |  none
| License       | MIT
| Doc PR        | none

Commits
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54e6fb4 add and correct armenian translations

Author: fabpot