phpunit: use more clear and readable indentation

Author: TomasVotruba

phpunit.xml.dist

@@ -7,15 +7,15 @@
     verbose="true"
     bootstrap="vendor/autoload.php"
 >
-  <testsuite>
-      <directory>./tests/unit</directory>
-  </testsuite>
-  <filter>
-    <whitelist>
-        <directory suffix=".php">./src/</directory>
-    </whitelist>
-  </filter>
-  <listeners>
-    <listener class="Mockery\Adapter\Phpunit\TestListener"></listener>
-  </listeners>
+    <testsuite>
+        <directory>./tests/unit</directory>
+    </testsuite>
+    <filter>
+        <whitelist>
+            <directory suffix=".php">./src/</directory>
+        </whitelist>
+    </filter>
+    <listeners>
+        <listener class="Mockery\Adapter\Phpunit\TestListener"></listener>
+    </listeners>
 </phpunit>