Update website/pages/accordion.mdx

Author: codebender828

website/pages/accordion.mdx

@@ -214,7 +214,7 @@ Pressing **`space`** or **`enter`** when the focus is on the `CAccordionHeader`
 | ------------- | --------------------------------- | ------- | --------------------------------------------------------------------------------------------------------- |
 | allowMultiple | `boolean`                         | `false` | If `true`, multiple accordion items can be expanded at once.                                              |
 | allowToggle   | `boolean`                         | `false` | If `true`, any expanded accordion item can be collapsed again.                                            |
-| index         | `Number` or `Array of Number`     |    0    | The index(es) of the expanded accordion-item                                                              |
+| index         | `Number` or `Array of Number`     |    0    | The index(es) of the expanded accordion item                                                              |
 | defaultIndex  | `Number` or `Array of Number`     |         | The initial index(es) of the expanded accordion item                                                      |
 
 ### Events