Simple updates to Controller docs
Merge pull request #968 from bcrowe/hotfix-controllers

Simple updates to Controller docs
[ja] Follow #842
[ja] Follow c7581c4aad, 489de35fe4
Merge pull request #983 from okonomi/feature/follow-tutorials-and-examples-blog

[ja] Follow c7581c4aad, 489de35fe4
[ja] Follow #928
Add missing required field.

Fixes #985
fix currency format example

Guess it was a typo, but examples should be error-free. No way 1234.56 converts to 1.236,33. Also there's no space after currency symbol.
Merge pull request #986 from arteq/patch-1

fix currency format example