minor #13322 [DI] Use improved Yaml syntax for defining method calls (W0rma)

This PR was merged into the 4.4 branch.

Discussion
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[DI] Use improved Yaml syntax for defining method calls

Examples were desribed in the blog: https://symfony.com/blog/new-in-symfony-4-4-dependency-injection-improvements-part-2#improved-yaml-syntax-for-method-calls

Fixes #12443

Commits
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5f8e782 use improved Yaml syntax for defining method calls

Author: javiereguiluz

service_container/calls.rst

@@ -40,9 +40,7 @@ To configure the container to call the ``setLogger`` method, use the ``calls`` k
             App\Service\MessageGenerator:
                 # ...
                 calls:
-                    - method: setLogger
-                      arguments:
-                          - '@logger'
+                    - setLogger: ['@logger']
 
     .. code-block:: xml
 
@@ -121,10 +119,7 @@ The configuration to tell the container it should do so would be like:
             App\Service\MessageGenerator:
                 # ...
                 calls:
-                    - method: withLogger
-                      arguments:
-                          - '@logger'
-                      returns_clone: true
+                    - withLogger: !returns_clone ['@logger']
 
     .. code-block:: xml