Revert "Configure external links before dispatching event"

This reverts commit 4c55d278b6.

Fixes #1650

src/Formatter/Formatter.php

@@ -122,10 +122,10 @@ class Formatter
         $configurator->Autolink;
         $configurator->tags->onDuplicate('replace');
 
-        $this->configureExternalLinks($configurator);
-
         $this->events->dispatch(new Configuring($configurator));
 
+        $this->configureExternalLinks($configurator);
+
         return $configurator;
     }