fixed expression

Author: OskarStark

security/expressions.rst

@@ -61,7 +61,7 @@ Additionally, you have access to a number of functions inside the expression:
     Similar, but not equal to ``IS_AUTHENTICATED_REMEMBERED``, see below.
 ``is_fully_authenticated``
     Similar, but not equal to ``IS_AUTHENTICATED_FULLY``, see below.
-``has_role``
+``is_granted``
     Checks to see if the user has the given role - equivalent to an expression like
     ``'ROLE_ADMIN' in roles``.