Change "renamed" post type to more descriptive "discussionRenamed"

src/Core/Seeders/DiscussionsTableSeeder.php

@@ -64,7 +64,7 @@ class DiscussionsTableSeeder extends Seeder
                         'discussion_id' => $discussion->id,
                         'time'          => $startTime = date_add($startTime, date_interval_create_from_date_string('1 second')),
                         'user_id'       => rand(1, $users),
-                        'type'          => 'renamed',
+                        'type'          => 'discussionRenamed',
                         'content'       => json_encode(array($faker->realText(rand(20, 40)), $discussion->title))
                     ]);
                 } else {