Add missing quote.

Contributes to CURA-5741.

resources/i18n/pl_PL/fdmprinter.def.json.po

@@ -6,7 +6,7 @@
 msgid ""
 msgstr ""
 "Project-Id-Version: Cura 3.5\n"
-"Report-Msgid-Bugs-To: r.dulek@ultimaker.com
+"Report-Msgid-Bugs-To: r.dulek@ultimaker.com"
 "POT-Creation-Date: 2018-09-19 17:07+0000\n"
 "PO-Revision-Date: 2018-09-21 21:52+0200\n"
 "Last-Translator: 'Jaguś' Paweł Jagusiak, Andrzej 'anraf1001' Rafalski and Jakub 'drzejkopf' Świeciński\n"