docs, examples: Use TOML for i18n config files

Fix #3200

docs/content/content/multilingual.md

@@ -118,9 +118,9 @@ The above also uses the `i18n` func, see [Translation of strings](#translation-o
 
 ### Translation of strings
 
-Hugo uses [go-i18n](https://github.com/nicksnyder/go-i18n) to support string translations.  Follow the link to find tools to manage your translation workflows.
+Hugo uses [go-i18n](https://github.com/nicksnyder/go-i18n) to support string translations. Follow the link to find tools to manage your translation workflows.
 
-Translations are collected from the `themes/[name]/i18n/` folder (built into the theme), as well as translations present in `i18n/` at the root of your project.  In the `i18n`, the translations will be merged and take precedence over what is in the theme folder.  Language files should be named according to RFC 5646  with names such as `en-US.yaml`, `fr.yaml`, etc.
+Translations are collected from the `themes/[name]/i18n/` folder (built into the theme), as well as translations present in `i18n/` at the root of your project.  In the `i18n`, the translations will be merged and take precedence over what is in the theme folder.  Language files should be named according to RFC 5646  with names such as `en-US.toml`, `fr.toml`, etc.
 
 From within your templates, use the `i18n` function like this:
 
@@ -128,11 +128,11 @@ From within your templates, use the `i18n` function like this:
 {{ i18n "home" }}
 ```
 
-This uses a definition like this one in `i18n/en-US.yaml`:
+This uses a definition like this one in `i18n/en-US.toml`:
 
 ```
-- id: home
-  translation: "Home"
+[home]
+other = "Home"
 ```
 
 Often you will want to use to the page variables in the translations strings. To do that, pass on the "." context when calling `i18n`:
@@ -141,19 +141,18 @@ Often you will want to use to the page variables in the translations strings. To
 {{ i18n "wordCount" . }}
 ```
 
-This uses a definition like this one in `i18n/en-US.yaml`:
+This uses a definition like this one in `i18n/en-US.toml`:
 
 ```
-- id: wordCount
-  translation: "This article has {{ .WordCount }} words."
+[wordCount]
+other = "This article has {{ .WordCount }} words."
 ```
 An example of singular and plural form:
 
 ```
-- id: readingTime
-  translation: 
-    one: "One minute read"
-    other: "{{.Count}} minutes read"
+[readingTime]
+one = "One minute read"
+other = "{{.Count}} minutes read"
 ```
 And then in the template:
 

examples/multilingual/i18n/en.toml

@@ -0,0 +1,2 @@
+[head_title]
+other = "Multilingual"

examples/multilingual/i18n/en.yaml

@@ -1,3 +0,0 @@
-- id: head_title
-  translation: "Multilingual"
-

examples/multilingual/i18n/et.toml

@@ -0,0 +1,2 @@
+[head_title]
+other = "Mitmekeelne"

examples/multilingual/i18n/et.yaml

@@ -1,2 +0,0 @@
-- id: head_title
-  translation: "Mitmekeelne"