Update index.md

files/en-us/web/html/element/input/index.md

@@ -345,7 +345,7 @@ Attributes for the `<input>` element include the [global HTML attributes](/en-US
 | [`popovertarget`](#popovertarget)             | `button`                                                                | Designates an `<input type="button">` as a control for a popover element              |
 | [`popovertargetaction`](#popovertargetaction) | `button`                                                                | Specifies the action that a popover control should perform                            |
 | [`readonly`](#readonly)                       | all except `hidden`, `range`, `color`, `checkbox`, `radio`, and buttons | Boolean. The value is not editable                                                    |
-| [`required`](#required)                       | all except `hidden`, `range`, `color`, and buttons                      | Boolean. A value is required or must be checked for the form to be submittable          |
+| [`required`](#required)                       | all except `hidden`, `range`, `color`, and buttons                      | Boolean. A value is required or must be checked for the form to be submittable        |
 | [`size`](#size)                               | `text`, `search`, `url`, `tel`, `email`, `password`                     | Size of the control                                                                   |
 | [`src`](#src)                                 | `image`                                                                 | Same as `src` attribute for {{htmlelement('img')}}; address of image resource         |
 | [`step`](#step)                               | `date`, `month`, `week`, `time`, `datetime-local`, `number`, `range`    | Incremental values that are valid                                                     |