fix composer indents

Author: pfefferle

composer.json

@@ -32,10 +32,10 @@
         "installer-name": "activitypub"
     },
     "scripts": {
-      "test": [
-        "composer install",
-        "bin/install-wp-tests.sh activitypub-test root activitypub-test test-db latest true",
-        "vendor/bin/phpunit"
-      ]
+        "test": [
+            "composer install",
+            "bin/install-wp-tests.sh activitypub-test root activitypub-test test-db latest true",
+            "vendor/bin/phpunit"
+        ]
     }
 }