fix: typo in subresources page (#1746)

Author: franckranaivo

core/subresources.md

@@ -274,7 +274,7 @@ class Company
 }
 ```
 
-We did not define any Doctrine annotation here and if we want thinks to work properly with GraphQL, we need to map the `employees` field as a Link to the class `Employee` using the property `company`.
+We did not define any Doctrine annotation here and if we want things to work properly with GraphQL, we need to map the `employees` field as a Link to the class `Employee` using the property `company`.
 
 As a general rule, if the property we want to create a link from is in the `fromClass`, use `fromProperty`, if not, use `toProperty`.