fix typo

README.md

@@ -35,7 +35,7 @@ entities:
 - `input_select` - select option
 - `number` - set value
 
-If you want to controll more than one entity with the same slider, use [light group](https://www.home-assistant.io/integrations/light.group/), [cover group](https://www.home-assistant.io/integrations/cover.group/) or a custom made [template entity](https://www.home-assistant.io/integrations/#search/template).
+If you want to control more than one entity with the same slider, use [light group](https://www.home-assistant.io/integrations/light.group/), [cover group](https://www.home-assistant.io/integrations/cover.group/) or a custom made [template entity](https://www.home-assistant.io/integrations/#search/template).
 
 ![domains](https://user-images.githubusercontent.com/1299821/59467899-1813c000-8e31-11e9-8abd-34c887a7db2a.png)
 
@@ -50,7 +50,7 @@ Available options:
 | `hide_state` | `true`/`false` | `true`: Do not display the current state <br>`false`: Always display current state - even when the card is too narrow for it to be usable | none    |
 | `grow`       | `true`/`false` | Make the slider as wide as possible (which is really just a little bit wider)                                                             | `false` |
 | `full_row`   | `true`/`false` | Hide the icon and name and stretch slider to full width                                                                                   | `false` |
-| `attribute`  | (see below)    | Which attribute the slider should controll                                                                                                |         |
+| `attribute`  | (see below)    | Which attribute the slider should control                                                                                                |         |
 
 ![options](https://user-images.githubusercontent.com/1299821/59467902-19dd8380-8e31-11e9-9173-97c9b6be3179.png)