Slightly cleanup

app/Console/Commands/Overrides/UpCommand.php

@@ -10,9 +10,10 @@ class UpCommand extends BaseUpCommand
     use RequiresDatabaseMigrations;
 
     /**
-     * @return bool|int
+     * Block someone from running this up command if they have not completed
+     * the migration process.
      */
-    public function handle()
+    public function handle(): int
     {
         if (!$this->hasCompletedMigrations()) {
             return $this->showMigrationWarning();