Update earlydisplay/THEMING.md

Co-authored-by: Dennis C <xfacthd@gmx.de>

Author: shartte

earlydisplay/THEMING.md

@@ -146,7 +146,7 @@ Inherits all properties of [element](#element), and adds the following:
 | Property              | Type                          | Description                                                                                                                                                                          |
 |-----------------------|-------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
 | `visible`             | boolean                       | Defaults to true. Can be used to hide pre-defined elements.                                                                                                                          |
-| `maintainAspectRatio` | boolean                       | Defaults to true. If only one dimension of the element is fully defined, the other dimension will scaled from the implicit element size while maintaining its original aspect ratio. |
+| `maintainAspectRatio` | boolean                       | Defaults to true. If only one dimension of the element is fully defined, the other dimension will be scaled from the implicit element size while maintaining its original aspect ratio. |
 | `left`                | [style length](#style-length) | Defaults to undefined. Positions the left edge of the element relative to the layout box.                                                                                            |
 | `top`                 | [style length](#style-length) | Defaults to undefined. Positions the top edge of the element relative to the layout box.                                                                                             |
 | `right`               | [style length](#style-length) | Defaults to undefined. Positions the right edge of the element relative to the layout box.                                                                                           |