Correct typo in filters.md

Fix typo in filters documentation regarding ':property' placeholder.

Author: GabrieleMartini

core/filters.md

@@ -295,7 +295,7 @@ public function apply(QueryBuilder $queryBuilder, QueryNameGeneratorInterface $q
 
 ### Restricting Properties with `:property` Placeholders
 
-Filters that work on a per-parameter basis can also use the `:property` placeholde and use the
+Filters that work on a per-parameter basis can also use the `:property` placeholder and use the
 parameter's `properties` configuration:
 
 ```php