np.random.uniform does not raise ValueError when `low > high`, even though other distribution do (like np.random.randint)

`print(np.random.randint(2, 1))` raises `ValueError`, also the documentation of `np.random.uniform` says those inputs are `low` and `high`.

### Reproducing code example:

```python
import numpy as np
print(np.random.uniform(2, 1))
```

### NumPy/Python version information:

1.19.2 3.7.7 (default, May  7 2020, 21:25:33) 
[GCC 7.3.0]
