format fix for README.md

README.md

@@ -70,9 +70,7 @@ Because a Layout is attached to a Paragraphs reference field, manipulating the l
 
 #### Example Code: Working with a Layout
 
-<code>
-<?php
-
+```php
 // Instantiate a new layout given an exisitng node
 // and the paragraph reference field name.
 $layout = new LayoutParagraphsLayout($node, $field_name);
@@ -84,9 +82,7 @@ $layout->insertAfterComponent($existing_paragraph_uuid, $the_new_paragraph);
 
 // Call the save() method on the node to save the changes permanently.
 $layout->getEntity()->save();
-
-?>
-</code>
+```
 
 #### Example Code: Rendering a Layout Paragraph
 
@@ -94,11 +90,7 @@ Note that rendering a Layout Section is already handled in the Layout Paragraphs
 
 See \Drupal\layout_paragraphs\Plugin\paragraphs\Behavior\LayoutParagraphsBehavior::view
 
-<code>
-<?php
-
+```php
 $layout_service = \Drupal::service('layout_paragraphs');
 $layout_service->renderLayoutParagraph($paragraph_entity, $view_mode);
-
-?>
-</code>
\ No newline at end of file
+```
\ No newline at end of file