[gnome-mahjongg] Update Polish translation

[Piotr Drąg <piotrdrag src gnome org>]

commit a5881ac3460cf903d233bbeb79d4565dd0c5ea0e
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Wed Feb 6 22:02:48 2019 +0100

    Update Polish translation

 po/pl.po | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)
---
diff --git a/po/pl.po b/po/pl.po
index f36b1c9..abe7f1c 100644
--- a/po/pl.po
+++ b/po/pl.po
@@ -19,8 +19,8 @@ msgid ""
 msgstr ""
 "Project-Id-Version: gnome-mahjongg\n"
 "Report-Msgid-Bugs-To: https://gitlab.gnome.org/GNOME/gnome-mahjongg/issues\n";
-"POT-Creation-Date: 2019-02-01 17:56+0000\n"
-"PO-Revision-Date: 2019-02-03 18:02+0100\n"
+"POT-Creation-Date: 2019-02-04 01:16+0000\n"
+"PO-Revision-Date: 2019-02-06 22:02+0100\n"
 "Last-Translator: Piotr Drąg <piotrdrag gmail com>\n"
 "Language-Team: Polish <community-poland mozilla org>\n"
 "Language: pl\n"
@@ -63,6 +63,10 @@ msgstr ""
 "Madżong GNOME zawiera wiele plansz, niektóre łatwe, a niektóre trudne. "
 "W razie utknięcia można użyć podpowiedzi, ale dodaje to karę czasową."
 
+#: data/org.gnome.Mahjongg.appdata.xml.in:36
+msgid "The GNOME Project"
+msgstr "Projekt GNOME"
+
 #: data/org.gnome.Mahjongg.desktop.in:3 src/gnome-mahjongg.vala:597
 #: src/gnome-mahjongg.vala:782
 msgid "Mahjongg"