[Cleanup:phpunit.xml] Fix incorrect indentation

pH-7 · pH-7 · commit d8b9e7c8c6ef · 2022-02-21T19:44:08.000+10:30
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
@@ -8,6 +8,6 @@
     <filter>
         <whitelist>
             <directory suffix=".php">src</directory>
-         </whitelist>
-     </filter>
+        </whitelist>
+    </filter>
 </phpunit>
