minor #17689 [Doctrine] Improve caution resolve doctrine example (alamirault)

This PR was merged into the 5.4 branch.

Discussion
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[Doctrine] Improve caution resolve doctrine example

Fixed #17686

Target configuration is better IMO

Commits
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1fdd767 Update caution resolve doctrine example

Author: javiereguiluz

doctrine.rst

@@ -65,7 +65,7 @@ The database connection information is stored as an environment variable called
     you must encode them. See `RFC 3986`_ for the full list of reserved characters or
     use the :phpfunction:`urlencode` function to encode them. In this case you need to
     remove the ``resolve:`` prefix in ``config/packages/doctrine.yaml`` to avoid errors:
-    ``url: '%env(resolve:DATABASE_URL)%'``
+    ``url: '%env(DATABASE_URL)%'``
 
 Now that your connection parameters are setup, Doctrine can create the ``db_name``
 database for you: