[gnome-user-docs] Update Polish translation

[Piotr Drąg <piotrdrag src gnome org>]

commit bb7560e0b1e1e4b94336eb98ca89bee0ec9624f0
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Mon Mar 26 04:32:07 2018 +0200

    Update Polish translation

 gnome-help/pl/figures/shell-appts-classic.png   |  Bin 77183 -> 77957 bytes
 gnome-help/pl/figures/shell-appts.png           |  Bin 99431 -> 99370 bytes
 gnome-help/pl/figures/shell-exit-classic.png    |  Bin 58034 -> 46024 bytes
 gnome-help/pl/figures/shell-exit.png            |  Bin 109859 -> 92486 bytes
 gnome-help/pl/figures/shell-lock.png            |  Bin 484056 -> 484870 bytes
 gnome-help/pl/figures/shell-top-bar-classic.png |  Bin 42858 -> 42075 bytes
 6 files changed, 0 insertions(+), 0 deletions(-)
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diff --git a/gnome-help/pl/figures/shell-appts-classic.png b/gnome-help/pl/figures/shell-appts-classic.png
index 4ed27f6..b8731f1 100644
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b/gnome-help/pl/figures/shell-appts-classic.png differ
diff --git a/gnome-help/pl/figures/shell-appts.png b/gnome-help/pl/figures/shell-appts.png
index ea5df02..bed6771 100644
Binary files a/gnome-help/pl/figures/shell-appts.png and b/gnome-help/pl/figures/shell-appts.png differ
diff --git a/gnome-help/pl/figures/shell-exit-classic.png b/gnome-help/pl/figures/shell-exit-classic.png
index e5fcf2c..47949fc 100644
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b/gnome-help/pl/figures/shell-exit-classic.png differ
diff --git a/gnome-help/pl/figures/shell-exit.png b/gnome-help/pl/figures/shell-exit.png
index c8062f1..5ea7635 100644
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diff --git a/gnome-help/pl/figures/shell-lock.png b/gnome-help/pl/figures/shell-lock.png
index 0b1e4c4..78ad8c4 100644
Binary files a/gnome-help/pl/figures/shell-lock.png and b/gnome-help/pl/figures/shell-lock.png differ
diff --git a/gnome-help/pl/figures/shell-top-bar-classic.png b/gnome-help/pl/figures/shell-top-bar-classic.png
index eacc126..78a064c 100644
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b/gnome-help/pl/figures/shell-top-bar-classic.png differ