minor #8659 Update business-logic.rst (davidnegreira, javiereguiluz)

This PR was merged into the master branch.

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Update business-logic.rst

no AppBundle in symfony 4

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912d94a Minor change
fe14a01 Update business-logic.rst

Author: xabbuh

best_practices/business-logic.rst

@@ -125,7 +125,7 @@ library or strategy you want for this.
 In practice, many Symfony applications rely on the independent
 `Doctrine project`_ to define their model using entities and repositories.
 Just like with business logic, we recommend storing Doctrine entities in the
-AppBundle.
+``src/Entity/`` directory.
 
 The three entities defined by our sample blog application are a good example: