Re-add syntax highlighting to daily emails and

...ATDC lessons

source/_daily_emails/2022-10-03.md

@@ -8,7 +8,7 @@ tags: [php]
 
 Here's a snippet of some Drupal code that I wrote last week. It's responsible for converting an array of nodes into a Collection of one of it's field values.
 
-```php
+```language-php
 return Collection::make($stationNodes)
   ->map(fn (NodeInterface $station): string => $station->get('field_station_code')->getString())
   ->values();
@@ -28,7 +28,7 @@ It accepts the original node but checks to ensure that the node is the correct t
 
 I've added a helper method to get the field value, encapsulating that logic in a reusable function whilst making the code easier to read and its intent clearer.
 
-```php
+```language-php
 namespace Drupal\mymodule\ValueObject;
 
 use Drupal\node\NodeInterface;
@@ -60,7 +60,7 @@ final class Station implements StationInterface {
 
 This is what my code now looks like:
 
-```php
+```language-php
 return Collection::make($stationNodes)
   ->map(fn (NodeInterface $node): StationInterface => Station::fromNode($node))
   ->map(fn (StationInterface $station): string => $station->getStationCode())