minor #13731 fix method name (xabbuh)

This PR was merged into the 5.1 branch.

Discussion
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fix method name

Commits
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84897c0 fix method name

Author: javiereguiluz

service_container/alias_private.rst

@@ -284,7 +284,7 @@ The following example shows how to inject an anonymous service into another serv
             $services = $configurator->services();
 
             $services->set(Foo::class)
-                // In versions earlier to Symfony 5.1 the inline_service() function was called service()
+                // In versions earlier to Symfony 5.1 the inline_service() function was called inline()
                 ->args([inline_service(AnonymousBar::class)])
         };