fix docs images url on the site

docs/documentation/index.html

@@ -22,7 +22,7 @@
 
     <meta property="og:url" content="http://laradock.io/documentation/">
     <meta property="og:title" content="Laradock">
-    <meta property="og:image" content="http://laradock.io/logo.png">
+    <meta property="og:image" content="http://laradock.io/images/logo.png">
     <meta name="apple-mobile-web-app-title" content="Laradock">
     <meta name="apple-mobile-web-app-capable" content="yes">
     <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
@@ -133,7 +133,7 @@
     <div class="banner">
       
         <div class="logo">
-          <img src="http://laradock.io/logo.png">
+          <img src="http://laradock.io/images/logo.png">
         </div>