minor #12986 Fix compiler pass phase when extensions that implements CompilerPassI… (l-vo)

This PR was merged into the 3.4 branch.

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Fix compiler pass phase when extensions that implements CompilerPassI…

Fix compiler pass phase when extensions that implements CompilerPassnterface are executed

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0a255dc Fix compiler pass phase when extensions that implements CompilerPassInterface are executed

Author: OskarStark

components/dependency_injection/compilation.rst

@@ -341,7 +341,7 @@ methods described in :doc:`/service_container/definitions`.
 .. note::
 
     Please note that the ``process()`` method in the extension class is
-    called during the optimization step. You can read
+    called during the ``PassConfig::TYPE_BEFORE_OPTIMIZATION`` step. You can read
     :ref:`the next section <components-di-separate-compiler-passes>` if you
     need to edit the container during another step.