minor #10089 Merged the output of another command with its command line (javiereguiluz)

This PR was merged into the 4.0 branch.

Discussion
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Merged the output of another command with its command line

This is the same as #10088 but for 4.0 branch.

Commits
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e729a44 Merged the output of another command with its command line

Author: javiereguiluz

routing.rst

@@ -340,8 +340,6 @@ As your app grows, you'll eventually have a *lot* of routes! To see them all, ru
 
     $ php bin/console debug:router
 
-.. code-block:: text
-
     ------------------------------ -------- -------------------------------------
      Name                           Method   Path
     ------------------------------ -------- -------------------------------------