Convert markdown into html + minor style adjustments

src/Bundle/ChillMainBundle/Entity/NewsItem.php

@@ -59,11 +59,15 @@ class NewsItem implements TrackCreationInterface, TrackUpdateInterface
 
     /**
      * @ORM\Column(type="date_immutable", nullable=false)
+     *
+     * @Groups({"read"})
      */
     private ?\DateTimeImmutable $startDate = null;
 
     /**
      * @ORM\Column(type="date_immutable", nullable=true, options={"default": null})
+     *
+     * @Groups({"read"})
      */
     private ?\DateTimeImmutable $endDate = null;