Fix tests services tags

Author: Jeremiah VALERIE

Tests/Functional/App/config/argumentWrapper/config.yml

@@ -19,10 +19,12 @@ services:
         factory: Symfony\Component\ExpressionLanguage\ExpressionFunction::fromPhp
         arguments:
             - 'is_a'
-        tags: ['overblog_graphql.expression_function']
+        tags:
+            - { name: overblog_graphql.expression_function }
     expression_function_json_encode:
         class: Symfony\Component\ExpressionLanguage\ExpressionFunction
         factory: Symfony\Component\ExpressionLanguage\ExpressionFunction::fromPhp
         arguments:
             - 'json_encode'
-        tags: ['overblog_graphql.expression_function']
+        tags:
+            - { name: overblog_graphql.expression_function }