Fix composer.json whitespace

composer.json

 {
-    "name": "drupal/subrequests",
-    "description": "Add a front controller that you can use to make subrequests.",
-    "type": "drupal-module",
-    "require": {
-        "php-jsonpointer/php-jsonpointer": "^3.0"
-    },
-    "license": "GPL-2.0+",
-    "authors": [
-        {
-            "name": "Mateu Aguiló Bosch",
-            "email": "mateu.aguilo.bosch@gmail.com"
-        }
-    ],
-    "minimum-stability": "dev"
+  "name": "drupal/subrequests",
+  "description": "Add a front controller that you can use to make subrequests.",
+  "type": "drupal-module",
+  "require": {
+    "php-jsonpointer/php-jsonpointer": "^3.0"
+  },
+  "license": "GPL-2.0+",
+  "authors": [
+    {
+      "name": "Mateu Aguiló Bosch",
+      "email": "mateu.aguilo.bosch@gmail.com"
+    }
+  ],
+  "minimum-stability": "dev"
 }