Updated docs

Author: Padam87

README.md

@@ -15,7 +15,7 @@ A bundle to rasterize web pages with Puppeteer (or other) for Symfony2
 
 ```php
 $response = new Response(
-    $this->get('padam87_rasterize.rasterizer')->rasterize(
+    $this->get(Rasterizer::class)->rasterize(
         $this->renderView('Bundle:Folder:template.pdf.twig')
     ),
     200, [

Resources/docs/how_to_customize_the_process.md

@@ -4,7 +4,7 @@ The rasterize methods accepts a callback as the 4th parameter.
 
 ```php
 $response = new Response(
-    $this->get('padam87_rasterize.rasterizer')->rasterize(
+    $this->get(Rasterizer::class)->rasterize(
         $this->renderView('Bundle:Folder:template.pdf.twig'),
         [],
         [],

Resources/docs/how_to_pass_arguments.md

@@ -25,7 +25,7 @@ const orientation = args[3];
 To change the orientation to `landscape`, you need to add one more parameter to the rasterizer call.
 
 ```php
-$this->get('padam87_rasterize.rasterizer')->rasterize(
+$this->get(Rasterizer::class)->rasterize(
     $this->renderView('Bundle:Folder:template.pdf.twig')
     [
         'orientation' => 'landscape'