Update task.md

'use the event delegation' -> 'use event delegation'

Author: paroche

2-ui/2-events/04-default-browser-action/2-catch-link-navigation/task.md

@@ -12,5 +12,5 @@ Like this:
 
 Details:
 
-- HTML inside the element may be loaded or regenerated dynamically at any time, so we can't find all links and put handlers on them. Use the event delegation.
+- HTML inside the element may be loaded or regenerated dynamically at any time, so we can't find all links and put handlers on them. Use event delegation.
 - The content may have nested tags. Inside links too, like `<a href=".."><i>...</i></a>`.