Fixed tiny typo in tus.md
@@ -37,7 +37,7 @@ const Tus = Uppy.Tus
## Options
-The `@uppy/tus` plugin supports all of [tus-js-client][]’s options. In addition tot that, it has the following configurable options:
+The `@uppy/tus` plugin supports all of [tus-js-client][]’s options. In addition to that, it has the following configurable options:
### `id: 'Tus'`