Mention Symfony is closed-source and link to symfony/cli github

Author: wouterj

setup.rst

@@ -33,6 +33,12 @@ requirements. Open your console terminal and run this command:
 
     $ symfony check:requirements
 
+.. note::
+
+    The Symfony binary is developped internally at Symfony. If you want to
+    report a bug or suggest a new feature, please create an issue on
+    `symfony/cli`_.
+
 .. _creating-symfony-applications:
 
 Creating Symfony Applications
@@ -294,6 +300,7 @@ Learn More
 .. _`Stellar Development with Symfony`: https://symfonycasts.com/screencast/symfony
 .. _`Install Composer`: https://getcomposer.org/download/
 .. _`install Symfony CLI`: https://symfony.com/download
+.. _`symfony/cli`: https://github.com/symfony/cli
 .. _`The Symfony Demo Application`: https://github.com/symfony/demo
 .. _`Symfony Flex`: https://github.com/symfony/flex
 .. _`PHP security advisories database`: https://github.com/FriendsOfPHP/security-advisories

setup/symfony_server.rst

@@ -19,8 +19,9 @@ The Symfony server is part of the ``symfony`` binary created when you
 
 .. note::
 
-    If you want to report a bug or suggest a new feature, please create an issue
-    on `symfony/cli`_.
+    The Symfony binary is developped internally at Symfony. If you want to
+    report a bug or suggest a new feature, please create an issue on
+    `symfony/cli`_.
 
 Getting Started
 ---------------