feat(settings): enable Vietnamese translation

Author: nijel

weblate/settings_docker.py

@@ -160,6 +160,7 @@
     ("th", "ไทย"),
     ("tr", "Türkçe"),
     ("uk", "Українська"),
+    ("vi", "Tiếng việt"),
     ("zh-hans", "简体中文"),
     ("zh-hant", "正體中文"),
 )

weblate/settings_example.py

@@ -128,6 +128,7 @@
     ("th", "ไทย"),
     ("tr", "Türkçe"),
     ("uk", "Українська"),
+    ("vi", "Tiếng việt"),
     ("zh-hans", "简体中文"),
     ("zh-hant", "正體中文"),
 )