Merge branch '5.3' into 5.4

* 5.3:
  Update setup.rst (Symfony 5.3)
  Update setup.rst (Symfony 4.4)

Author: javiereguiluz

setup.rst

@@ -54,10 +54,10 @@ application:
 .. code-block:: terminal
 
     # run this if you are building a traditional web application
-    $ symfony new my_project_name --version="5.4.x" --full
+    $ symfony new my_project_name --version=5.3 --full
 
     # run this if you are building a microservice, console application or API
-    $ symfony new my_project_name --version="5.4.x"
+    $ symfony new my_project_name --version=5.3
 
 The only difference between these two commands is the number of packages
 installed by default. The ``--full`` option installs all the packages that you
@@ -69,10 +69,10 @@ Symfony application using Composer:
 .. code-block:: terminal
 
     # run this if you are building a traditional web application
-    $ composer create-project symfony/website-skeleton:"5.4.x" my_project_name
+    $ composer create-project symfony/website-skeleton:"^5.3" my_project_name
 
     # run this if you are building a microservice, console application or API
-    $ composer create-project symfony/skeleton:"5.4.x" my_project_name
+    $ composer create-project symfony/skeleton:"^5.3" my_project_name
 
 No matter which command you run to create the Symfony application. All of them
 will create a new ``my_project_name/`` directory, download some dependencies
@@ -278,7 +278,7 @@ create new projects. If you use Composer, you need to tell the exact version:
 
 .. code-block:: terminal
 
-    $ composer create-project symfony/website-skeleton:"^5.4" my_project_name
+    $ composer create-project symfony/skeleton:"^5.4" my_project_name
 
 The Symfony Demo application
 ----------------------------