chore(snackbar): fix typo in readme (#1493)

Author: metanav

src/lib/snack-bar/README.md

@@ -5,8 +5,8 @@
 
 | Name |  Description |
 | --- | --- |
-| `open(message: string,<br>  actionLabel: string, config: MdSnackBarConfig): MdSnackBarRef<SimpleSnackBar>` | Creates and opens a simple snack bar noticiation matching material spec. |
-| `openFromComponent(component: ComponentType<T>, config: MdSnackBarConfig): MdSnackBarRef<T>` | Creates and opens a snack bar noticiation with a custom component as content. |
+| `open(message: string,<br>  actionLabel: string, config: MdSnackBarConfig): MdSnackBarRef<SimpleSnackBar>` | Creates and opens a simple snack bar notification matching material spec. |
+| `openFromComponent(component: ComponentType<T>, config: MdSnackBarConfig): MdSnackBarRef<T>` | Creates and opens a snack bar notification with a custom component as content. |
 
 ### Config
 
@@ -35,4 +35,4 @@ export class MyComponent {
  }
 
 }
-```
+```