minor #16352 Reference the open sourced Symfony CLI code (wouterj)

This PR was merged into the 4.4 branch.

Discussion
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Reference the open sourced Symfony CLI code

Symfony CLI is open source now 🥳

https://symfony.com/blog/announcing-the-open-sourcing-of-the-symfony-cli

Commits
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cdabcf9 Reference the open sourced Symfony CLI code

Author: javiereguiluz

setup.rst

@@ -39,9 +39,8 @@ requirements. Open your console terminal and run this command:
 
 .. note::
 
-    The Symfony binary is developed internally at Symfony. If you want to
-    report a bug or suggest a new feature, please create an issue on
-    `symfony/cli`_.
+    The Symfony CLI is written in Go and you can contribute to it in the
+    `symfony-cli/symfony-cli GitHub repository`_.
 
 .. _creating-symfony-applications:
 
@@ -310,7 +309,7 @@ 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
+.. _`symfony-cli/symfony-cli GitHub repository`: https://github.com/symfony-cli/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

@@ -19,9 +19,8 @@ The Symfony server is part of the ``symfony`` binary created when you
 
 .. note::
 
-    The Symfony binary is developed internally at Symfony. If you want to
-    report a bug or suggest a new feature, please create an issue on
-    `symfony/cli`_.
+   You can view and contribute to the Symfony CLI source in the
+   `symfony-cli/symfony-cli GitHub repository`_.
 
 Getting Started
 ---------------
@@ -421,7 +420,7 @@ debug any issues.
 `Read SymfonyCloud technical docs`_.
 
 .. _`install Symfony`: https://symfony.com/download
-.. _`symfony/cli`: https://github.com/symfony/cli
+.. _`symfony-cli/symfony-cli GitHub repository`: https://github.com/symfony-cli/symfony-cli
 .. _`Docker`: https://en.wikipedia.org/wiki/Docker_(software)
 .. _`SymfonyCloud`: https://symfony.com/cloud/
 .. _`Read SymfonyCloud technical docs`: https://symfony.com/doc/master/cloud/intro.html