Correct typo in comment

Closes lotgd/core#108

src/Events/EventContextData.php

@@ -6,7 +6,7 @@ namespace LotGD\Core\Events;
 use LotGD\Core\Exceptions\ArgumentException;
 
 /**
- * EventContextDataContainer to provide a basic structure for managing contextual data of an event.
+ * EventContextData to provide a basic structure for managing contextual data of an event.
  *
  * This class must be immutable and returns always a new instance of itself for any change.
  * @package LotGD\Core\Events
@@ -133,4 +133,4 @@ class EventContextData
             "{$field} is not valid in this context, only {$this->getFormattedListOfFields()} are allowed."
         );
     }
-}
+}