Fix typo in README.md
@@ -270,7 +270,7 @@ Note: This symbol could also be replaced by others, like `<` or `=`. See the sec
### `!X` – Cast to Boolean
-The logical "Not" operator can be used to create booelans `false` and `true`:
+The logical "Not" operator can be used to create booleans `false` and `true`:
```js
![] // false