docs: arrow color

Author: gabrieljablonski

Diff for: docs/docs/options.mdx

@@ -123,4 +123,5 @@ import { Tooltip } from 'react-tooltip';
 | `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`                | `CSSProperties['border']`              | no       |                           | a CSS border style                                                                                                                | Change the style of the tooltip border (including the arrow)                                                                                                    |
 | `opacity`               | `CSSProperties['opacity']`             | no       | `0.9`                     | a CSS opacity value                                                                                                               | Change the opacity of the tooltip                                                                                                                               |
+| `arrowColor`            | `CSSProperties['backgroundColor']`     | no       |                           | a CSS background color                                                                                                            | Change color of the tooltip arrow                                                                                                                               |
 | `disableStyleInjection` | <code>`boolean` &#124; `'core'`</code> | no       | `false`                   | `true` `false` `'core'`                                                                                                           | Whether to disable automatic style injection. Do not set dynamically. Check the [styling page](./examples/styling#disabling-reacttooltip-css) for more details  |

Diff for: docs/docs/upgrade-guide/changelog-v4-v5.md

@@ -68,7 +68,7 @@ If you run into any problems with the tooltip not updating after changes are mad
 - [ ] `textColor` - use `className` and custom CSS
 - [ ] `backgroundColor` - use `className` and custom CSS
 - [ ] `borderColor` - use `border` prop
-- [ ] `arrowColor` - use `className` and custom CSS
+- [x] `arrowColor`
 - [ ] `arrowRadius` - use `className` and custom CSS
 - [ ] `tooltipRadius` - use `className` and custom CSS
 - [ ] `insecure`