Applied fixes from StyleCI

[ci skip] [skip ci]

Author: Nyholm

src/CachePlugin.php

@@ -90,8 +90,8 @@ public function handleRequest(RequestInterface $request, callable $next, callabl
         return $next($request)->then(function (ResponseInterface $response) use ($cacheItem) {
             if (304 === $response->getStatusCode()) {
                 if (!$cacheItem->isHit()) {
-                    /* 
-                     * We do not have the item in cache. This plugin did not add If-Modified-Since 
+                    /*
+                     * We do not have the item in cache. This plugin did not add If-Modified-Since
                      * or If-None-Match headers. Return the response from server.
                      */
                     return $response;