Update UserPassword.rst

update dependency

Author: zairigimad

reference/constraints/UserPassword.rst

@@ -13,7 +13,7 @@ password, but needs to enter their old password for security.
 .. note::
 
     In order to use this constraints, you should have installed the 
-    symfony/security component with Composer.
+    symfony/security-core component with Composer.
 
 ==========  ===================================================================
 Applies to  :ref:`property or method <validation-property-target>`