Enable localization for Russian.

config.toml

@@ -1,5 +1,4 @@
-baseURL = "https://danilafe.com"
-languageCode = "en-us"
+languageCode = "en"
 title = "Daniel's Blog"
 theme = "vanilla"
 pygmentsCodeFences = true
@@ -11,3 +10,9 @@ summaryLength = 20
     endLevel = 4
     ordered = false
     startLevel = 3
+
+[languages]
+  [languages.en]
+    baseURL = "https://danilafe.com"
+  [languages.ru]
+    baseURL = "https://ru.danilafe.com"