Typo fixed

Author: venu

components/dependency_injection/parentservices.rst

@@ -276,7 +276,7 @@ when the child services are instantiated.
 
 .. caution::
 
-   ``scope``, ``abstract``, ``abstract`` attributes are always taken from the child.
+   ``scope``, ``abstract``, ``tags`` attributes are always taken from the child.
 
 The parent service is abstract as it should not be directly retrieved from the
 container or passed into another service. It exists merely as a "template" that