Fixed db name in migration

NzbDrone.Core/Datastore/Migrations/Migration20121012.cs

@@ -11,7 +11,7 @@ namespace NzbDrone.Core.Datastore.Migrations
     {
         protected override void MainDbUpgrade()
         {
-            Database.AddColumn("Episode", new Column("AbsoluteEpisodeNumber", DbType.Int32, ColumnProperty.Null));
+            Database.AddColumn("Episodes", new Column("AbsoluteEpisodeNumber", DbType.Int32, ColumnProperty.Null));
         }
     }
 }

NzbDrone.Core/NzbDrone.Core.csproj

@@ -226,6 +226,7 @@
     <Compile Include="Datastore\MigrationLogger.cs" />
     <Compile Include="Datastore\MigrationsHelper.cs" />
     <Compile Include="Datastore\CustomeMapper.cs" />
+    <Compile Include="Datastore\Migrations\Migration20121012.cs" />
     <Compile Include="Datastore\Migrations\Migration20120919.cs" />
     <Compile Include="Datastore\Migrations\Migration20120918.cs" />
     <Compile Include="Datastore\Migrations\Migration20120802.cs" />