minor #15060 Update env_var_processors.rst (ro0NL)

This PR was merged into the 4.4 branch.

Discussion
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Update env_var_processors.rst

Use CSV example instead of JSON for the CSV processor :)
Trim values, as CSV doesnt.

Commits
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3d5dadd Update env_var_processors.rst

Author: javiereguiluz

configuration/env_var_processors.rst

@@ -285,7 +285,7 @@ Symfony provides the following env var processors:
 
             # config/packages/framework.yaml
             parameters:
-                env(TRUSTED_HOSTS): "10.0.0.1, 10.0.0.2"
+                env(TRUSTED_HOSTS): "10.0.0.1,10.0.0.2"
             framework:
                trusted_hosts: '%env(csv:TRUSTED_HOSTS)%'
 
@@ -302,7 +302,7 @@ Symfony provides the following env var processors:
                     https://symfony.com/schema/dic/symfony/symfony-1.0.xsd">
 
                 <parameters>
-                    <parameter key="env(TRUSTED_HOSTS)">["10.0.0.1", "10.0.0.2"]</parameter>
+                    <parameter key="env(TRUSTED_HOSTS)">10.0.0.1,10.0.0.2</parameter>
                 </parameters>
 
                 <framework:config trusted-hosts="%env(csv:TRUSTED_HOSTS)%"/>
@@ -311,7 +311,7 @@ Symfony provides the following env var processors:
         .. code-block:: php
 
             // config/packages/framework.php
-            $container->setParameter('env(TRUSTED_HOSTS)', '["10.0.0.1", "10.0.0.2"]');
+            $container->setParameter('env(TRUSTED_HOSTS)', '10.0.0.1,10.0.0.2');
             $container->loadFromExtension('framework', [
                 'trusted_hosts' => '%env(csv:TRUSTED_HOSTS)%',
             ]);