minor #13231 [Workflow] Add workflow documentation link to more detailed doc (noniagriconomie)

This PR was merged into the 3.4 branch.

Discussion
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[Workflow] Add workflow documentation link to more detailed doc

Hi

Here is an attempt to better link the Workflow component bare + component with Symfony documentations

FYI the https://symfony.com/doc/master/workflow.html reference a "read more" page on the first paragraph
But as all components pages looks the same, I put this at the bottom of the page not on top

Related to #9834 (comment)

friendly ping @lyrixx

Commits
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4b1e7db Update workflow.rst

Author: javiereguiluz

components/workflow.rst

@@ -101,6 +101,8 @@ When you have configured a ``Registry`` with your workflows, you may use it as f
 Learn more
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+Read more about the usage of the :doc:`Workflow component </workflow>` inside a Symfony application.
+
 .. toctree::
     :maxdepth: 1
     :glob: