refactor(DbRepositoryTests): Update AddDbRepository configuration

DigitalData.Core.Infrastructure/DbRepository.cs

@@ -9,6 +9,7 @@ public class DbRepository<TDbContext, TEntity> : IRepository<TEntity> where TDbC
     protected internal readonly TDbContext Context;
 
     protected internal readonly DbSet<TEntity> Entities;
+
     public IEntityMapper<TEntity> Mapper { get; }
 
     public DbRepository(TDbContext context, Func<TDbContext, DbSet<TEntity>> queryFactory, IEntityMapper<TEntity> mapper)