changing the logo graphics from PNG to SVG - the same as it is in documentation

Author: michalbundyra

module/Application/view/layout/layout.phtml

@@ -33,7 +33,7 @@
                         <span class="icon-bar"></span>
                     </button>
                     <a class="navbar-brand" href="<?= $this->url('home') ?>">
-                        <img src="<?= $this->basePath('img/zf-logo.png') ?>" alt="Zend Framework <?= \Application\Module::VERSION ?>"/>&nbsp;Skeleton Application
+                        <img src="<?= $this->basePath('img/zf-logo-mark.svg') ?>" height="28" alt="Zend Framework <?= \Application\Module::VERSION ?>"/>&nbsp;Skeleton Application
                     </a>
                 </div>
                 <div class="collapse navbar-collapse">