docs: improve border description

docs/docs/options.mdx

@@ -114,11 +114,11 @@ import { Tooltip } from 'react-tooltip';
 | `closeOnEsc` | `boolean` | no | `false` | `true` `false` | Pressing escape key will close the tooltip |
 | `closeOnScroll` | `boolean` | no | `false` | `true` `false` | Scrolling will close the tooltip (for this to work, scroll element must be either the root html tag, the tooltip parent, or the anchor parent) |
 | `closeOnEsc` | `boolean` | no | `false` | `true` `false` | Resizing the window will close the tooltip |
-| `style` | `CSSProperties` | no | | a React inline style | Add inline styles directly to the tooltip |
+| `style` | `CSSProperties` | no | | a CSS style object  | Add inline styles directly to the tooltip |
 | `position` | `{ x: number; y: number }` | no | | any `number` value for both `x` and `y` | Override the tooltip position on the DOM |
 | `isOpen` | `boolean` | no | handled by internal state | `true` `false` | The tooltip can be controlled or uncontrolled, this attribute can be used to handle show and hide tooltip outside tooltip (can be used **without** `setIsOpen`) |
 | `setIsOpen` | `function` | no | | | The tooltip can be controlled or uncontrolled, this attribute can be used to handle show and hide tooltip outside tooltip |
 | `afterShow` | `function` | no | | | A function to be called after the tooltip is shown |
 | `afterHide` | `function` | no | | | A function to be called after the tooltip is hidden |
 | `middlewares` | `Middleware[]` | no | | array of valid `floating-ui` middlewares | Allows for advanced customization. Check the [`floating-ui` docs](https://floating-ui.com/docs/middleware) for more information |
-| `border` | `string`  | no | | a React border style | Change style of the tooltip border including arrows  |
+| `border` | `CSSProperties['border']` | no | | a CSS border style  | Change the style of the tooltip border (including the arrow) |