Update SrLatnMeTest.php

[perisicnikola37]

No description provided.

[kylekatarnls]

Hello, thanks for your contribution, I debugged this and saw that Symfony doesn't pick the correct "sr" pluralization because of the "Latn" or "Cyrl" variant in the locale name.

When I fix it, I see it matches your change but it also modify some other output lines, can you confirm those 4 changes are also correct:
66b9317#diff-0a9e11e82065a345aa701dbc73fdbda5c3202d13454331cb5d0392788f2adbf0

For instance 1 nedjelja 6 dan would become 1 nedjelja 6 dana:

        // Carbon::now()->addWeek()->addDays(6)->diffForHumans(null, true, false, 2)
        // '1 week 6 days'
        '1 nedjelja 6 dana',

[kylekatarnls]

Merged in #2740