docs(slim-select-nested-select): response_root infers name from input name

Author: difernandez

docs/slim-select_nested_select.md

@@ -90,7 +90,7 @@ Nested select, allows you to customize the general behavior of the input:
 * `fields`: **(optional)** An array of field names where to search for matches in the related model. If we give many fields, they will be searched with an OR condition.
 * `display_name`: **(optional)** You can pass an optional `display_name` to set the attribute (or method) to show results on the select. It **defaults to**: `name`
 * `minimum_input_length`: **(optional)** Minimum number of characters required to initiate the search. It **defaults to**: `1`. Set this value to `0` to disable type-to-search and show a static list.
-* `response_root`: **(optional)** If you have defined the `url` attribute and a request to that url responds with a root, you can indicate the name of that root with this attribute. By default, the gem will try to infer the root from url. For example: if `url` is `GET /admin/countries`, the root will be `countries`. If you have a rootless api, you don't need to worry about this attribute.
+* `response_root`: **(optional)** If you have defined the `url` attribute and a request to that url responds with a root, you can indicate the name of that root with this attribute. By default, the gem will try to infer the root from the name of the input. If you have a rootless api, you don't need to worry about this attribute.
 * `predicate`: **(optional)** You can change the default [ransack predicate](https://github.com/activerecord-hackery/ransack#search-matchers). It **defaults to** `contains`
 
 ```ruby