Solve the issue of missing the last sentence with punctuation

[yh646492956]

Solve the issue of missing the last sentence with punctuation

[csukuangfj]

Could you post the input example sentence that this PR aims to fix?

[yh646492956]

i just use the sample text, here is the result:
Input text: 你好吗how are you Fantasitic谢谢我很好你怎么样呢
Output text: 你好吗？how are you Fantasitic？

this commit is aim to fix this issue, here is the fix result:
Input text: 你好吗how are you Fantasitic谢谢我很好你怎么样呢
Output text: 你好吗？how are you Fantasitic？谢谢我很好，你怎么样呢？
@csukuangfj