Fixed typo in PruneCommand

Author: GrahamCampbell

src/Illuminate/Foundation/Providers/ArtisanServiceProvider.php

@@ -96,7 +96,7 @@ class ArtisanServiceProvider extends ServiceProvider implements DeferrableProvid
         'ConfigCache' => ConfigCacheCommand::class,
         'ConfigClear' => ConfigClearCommand::class,
         'Db' => DbCommand::class,
-        'DbPrune' => Prune::class,
+        'DbPrune' => PruneCommand::class,
         'DbWipe' => WipeCommand::class,
         'Down' => DownCommand::class,
         'Environment' => EnvironmentCommand::class,