Add Japanese to translations to build.

JulienPalard · JulienPalard · commit 00dbec7f463b · 2017-08-08T14:57:21.000+02:00
diff --git a/build_docs.py b/build_docs.py
@@ -47,7 +47,8 @@
 
 LANGUAGES = [
     'en',
-    'fr'
+    'fr',
+    'ja'
 ]
 
 
