load_dataset("text","dataset.txt") loads the wrong dataset!
### Describe the bug

I am trying to load my own custom text dataset using the load_dataset function.  My dataset is a bunch of ordered text, think along the lines of shakespeare plays.  However, after I load the dataset and I inspect it, the dataset is a table with a bunch of latitude and longitude values!  What in the world??

### Steps to reproduce the bug

my_dataset = load_dataset("text","TextFile.txt")
my_dataset

### Expected behavior

I expected the dataset to contain the actual data from the text document that I used.

### Environment info

Google Colab
You need to provide a text file as `data_files`, not as a configuration:

```python
my_dataset = load_dataset("text", data_files="TextFile.txt")
```

Otherwise, since `data_files` is `None`, it picks up Colab's sample datasets from the `content` dir.