Fix generated response text

join="" does not exist for python 3.10

And a regular print was printing text with jumbled \n

This PR instead just make the code look nice

```python
import torch
import torch.nn as nn
import torch.nn.functional as F


class Model(nn.Module):
def __init__(self) -> None:
super().__init__()

def forward(self, a, b):
return a + b


def get_inputs():
# randomly generate input tensors based on the model architecture
a = torch.randn(1, 128).cuda()
b = torch.randn(1, 128).cuda()
return [a, b]


def get_init_inputs():
# randomly generate tensors required for initialization based on the model architecture
return []

```
The example new arch with custom Triton kernels looks like this:
```
import torch
import torch.nn as nn
import torch.nn.functional as F
import triton
import triton.language as tl


@triton .jit
def add_kernel(
x_ptr, # Pointer to first input
y_ptr, # Pointer to second input
out_ptr,
```

README.md

@@ -47,7 +47,7 @@ response = pipeline(
     max_length=200,
     truncation=True,
 )[0]
-print(prompt, response, join="")
+print(response["generated_text"])
 ```
 
 ## Model Details