fix typo

README.md

@@ -75,7 +75,7 @@ Features
 
 * EasyAdmin allows filtering list with `dql_filter` configuration entry. But this is not dynamic and must be configured as an apart list in `easy_admin` configuration.*
 
-This extension allows to __dynamically filter lists__ by adding `filters` parameter in the URL parameters. Having a list of books at URL `<url-to-admin>?action=list&entity=Book` with a releaseYear fiekd, you can filter on books releasd in 2016 by requesting `<url-to-admin>?action=list&entity=Book&filters[entity.releaseDate]=2016`. It only matches exact values, but you can chain them. To request books released in 2015 and 2016, you must request `<url-to-admin>?action=list&entity=Book&filters[entity.releaseDate][]=2015&filters[entity.releaseDate][]=2016`.
+This extension allows to __dynamically filter lists__ by adding `filters` parameter in the URL parameters. Having a list of books at URL `<url-to-admin>?action=list&entity=Book` with a releaseYear field, you can filter on books releasd in 2016 by requesting `<url-to-admin>?action=list&entity=Book&filters[entity.releaseDate]=2016`. It only matches exact values, but you can chain them. To request books released in 2015 and 2016, you must request `<url-to-admin>?action=list&entity=Book&filters[entity.releaseDate][]=2015&filters[entity.releaseDate][]=2016`.
 
 This `filters` parameter is transmitted to the referer used for post update/delete/create redirection AND for search !