pl localization - grammar change in couple of places

[turbofart]

No description provided.

[codecov-io]

Current coverage is 82.66%

Merging #1522 into master will not affect coverage as of c10625d

@@            master   #1522   diff @@
======================================
  Files           79      79       
  Stmts         6108    6108       
  Branches         0       0       
  Methods          0       0       
======================================
  Hit           5049    5049       
  Partial          0       0       
  Missed        1059    1059       

Review entire Coverage Diff as of c10625d

---

Uncovered Suggestions

1. +0.19% via .../js/profileeditor.js#324...335
2. +0.18% via .../js/profileeditor.js#269...279
3. +0.16% via .../report/js/report.js#259...268
4. See 7 more...

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