CS: Single line comments should use double slashes (//) and not hash (#).

Author: keradus

Tests/HttpCache/HttpCacheTest.php

@@ -716,7 +716,7 @@ public function testFetchesFullResponseWhenCacheStaleAndNoValidatorsPresent()
         $this->assertTraceContains('store');
         $this->assertEquals('Hello World', $this->response->getContent());
 
-        # go in and play around with the cached metadata directly ...
+        // go in and play around with the cached metadata directly ...
         $values = $this->getMetaStorageValues();
         $this->assertCount(1, $values);
         $tmp = unserialize($values[0]);