gui: Update transifex slug for 0.19

laanwj · laanwj · commit 072f37a7ed11 · 2019-09-02T13:40:01.000+02:00
diff --git a/.tx/config b/.tx/config
@@ -1,7 +1,7 @@
 [main]
 host = https://www.transifex.com
 
-[bitcoin.qt-translation-018x]
+[bitcoin.qt-translation-019x]
 file_filter = src/qt/locale/bitcoin_<lang>.ts
 source_file = src/qt/locale/bitcoin_en.ts
 source_lang = en
