[gnome-tweaks] Update Polish translation

[Piotr Drąg <piotrdrag src gnome org>]

commit b441c73b7db1e7e5c155069bb962f574e2fe2e7e
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Thu Feb 21 17:45:42 2019 +0100

    Update Polish translation

 po/pl.po | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/po/pl.po b/po/pl.po
index f3e70e2..8b68e0f 100644
--- a/po/pl.po
+++ b/po/pl.po
@@ -8,8 +8,8 @@ msgid ""
 msgstr ""
 "Project-Id-Version: gnome-tweaks\n"
 "Report-Msgid-Bugs-To: https://gitlab.gnome.org/GNOME/gnome-tweaks/issues\n";
-"POT-Creation-Date: 2018-12-06 00:03+0000\n"
-"PO-Revision-Date: 2019-02-06 21:25+0100\n"
+"POT-Creation-Date: 2019-02-06 20:27+0000\n"
+"PO-Revision-Date: 2019-02-21 17:45+0100\n"
 "Last-Translator: Piotr Drąg <piotrdrag gmail com>\n"
 "Language-Team: Polish <community-poland mozilla org>\n"
 "Language: pl\n"
@@ -47,7 +47,7 @@ msgstr ""
 "i rozszerzeniami, zmieniać ustawienia zasilania, zarządzać programami "
 "startowymi i włączyć ikony pulpitu."
 
-#: data/org.gnome.tweaks.desktop.in:3 gtweak/tweakview.py:83
+#: data/org.gnome.tweaks.desktop.in:3 gtweak/tweakview.py:84
 msgid "Tweaks"
 msgstr "Dostrajanie"
 
@@ -101,7 +101,7 @@ msgstr "Powłoka GNOME nie jest uruchomiona"
 
 #: gtweak/app.py:84
 msgid "GTK+"
-msgstr "GTK+"
+msgstr "GTK"
 
 #: gtweak/app.py:91
 msgid "Homepage"