minor #16285 Update esi.rst (BahmanMD)

This PR was merged into the 4.4 branch.

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Update esi.rst

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a36d52a Update esi.rst

Author: javiereguiluz

http_cache/esi.rst

@@ -65,7 +65,7 @@ First, to use ESI, be sure to enable it in your application configuration:
         # config/packages/framework.yaml
         framework:
             # ...
-            esi: { enabled: true }
+            esi: true
 
     .. code-block:: xml