fix readme

README.md

@@ -18,7 +18,7 @@ To lint the current file, run `Lint the current file` (`Ctrl+Alt+L` by default).
 Add a rule by adding its alias in the settings. The listed rules are applied in order.
 
 Some rules have configurable options, which are set with the format `option=value`.
-For example ``;
+For example, `yaml-timestamp format=YYYY-MM-DD`
 
 ## Development Instructions