[gnome-chess] Update Polish translation

[Piotr Drąg <piotrdrag src gnome org>]

commit 1ce9269617a98392e9cd004024c7d5431a81524e
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Tue Mar 27 21:12:29 2018 +0200

    Update Polish translation

 help/pl/figures/game-3-12.png                   |  Bin 35801 -> 36765 bytes
 help/pl/figures/preferences-appearance-3-12.png |  Bin 16736 -> 18418 bytes
 help/pl/figures/preferences-game-3-12.png       |  Bin 20451 -> 21580 bytes
 3 files changed, 0 insertions(+), 0 deletions(-)
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diff --git a/help/pl/figures/game-3-12.png b/help/pl/figures/game-3-12.png
index d6bc258..733de34 100644
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diff --git a/help/pl/figures/preferences-appearance-3-12.png b/help/pl/figures/preferences-appearance-3-12.png
index 2833f2c..c072495 100644
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b/help/pl/figures/preferences-appearance-3-12.png differ
diff --git a/help/pl/figures/preferences-game-3-12.png b/help/pl/figures/preferences-game-3-12.png
index 9434713..6643365 100644
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differ