Adjusted indentation

Author: Thomas Berends

setup/upgrade_major.rst

@@ -133,10 +133,10 @@ mentions of ``4.4.*`` to ``5.0.*``.
         "...": "...",
 
         "require": {
-        "symfony/asset": "5.0.*",
-        "symfony/flex": "^1.3.1",
-        "symfony/mailer": "5.0.*",
-        "symfony/yaml": "5.0.*"
+            "symfony/asset": "5.0.*",
+            "symfony/flex": "^1.3.1",
+            "symfony/mailer": "5.0.*",
+            "symfony/yaml": "5.0.*"
         },
         "...": "..."
     }