Update workflow.rst

Author: Mick3DIY

workflow.rst

@@ -162,7 +162,7 @@ follows:
 
 .. tip::
 
-    Since Symfony 3.2, you can use constants in YAML files and add some in the BlogPost entity for places ``draft`` by ``!php/const App\Entity\BlogPost::STATE_DRAFT`` or for transitions ``to_review`` by ``!php/const App\Entity\BlogPost::TRANSITION_TO_REVIEW``.
+    You can use constants in YAML files and add some in the BlogPost entity for places ``draft`` by ``!php/const App\Entity\BlogPost::STATE_DRAFT`` or for transitions ``to_review`` by ``!php/const App\Entity\BlogPost::TRANSITION_TO_REVIEW``.
 
 The configured property will be used via its implemented getter/setter methods by the marking store::