Response of /wiki/home should be a wiki object and not an array

doc/api/wikis.md

@@ -65,14 +65,12 @@ curl --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/a
 Example response:
 
 ```json
-[
-  {
+{
   "content" : "home page",
   "format" : "markdown",
   "slug" : "home",
   "title" : "home"
-  }
-]
+}
 ```
 
 ## Create a new wiki page