Update rest-routing.md

Added a note that pluralization of controller IDs in RESTful endpoints by yii\rest\UrlRule doesn't always simply add "s" to the end of the controller ID. I cited an example of controllers whose IDs end in the letter "x", for example "BoxController", whose RESTful endpoints are pluralized to "boxes"

Update rest-routing.md
05a162f8 · cnanders · 858ceb50 · 05a162f8
Commit 05a162f8 authored Sep 30, 2014 by cnanders
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@@ -75,4 +75,4 @@ For example, to support a new action `search` by the endpoint `GET /users/search
 You may have noticed that the controller ID `user` appears in plural form as `users` in the endpoints.
 This is because [[yii\rest\UrlRule]] automatically pluralizes controller IDs for them to use in endpoints.
 You may disable this behavior by setting [[yii\rest\UrlRule::pluralize]] to be false, or if you want
-to use some special names you may configure the [[yii\rest\UrlRule::controller]] property.
+to use some special names you may configure the [[yii\rest\UrlRule::controller]] property. Note that the pluralization of RESTful endpoints does not always simply add an "s" to the end of the controller id.  A controller whose ID ends in "x", for example "BoxController" (with ID `box`), has RESTful endpoints pluralized to `boxes` by [[yii\rest\UrlRule]].