Beats 86% + Simple 2-liner
Code
# Code
```pythondata []
import pandas as pd

def capitalize_content(user_content: pd.DataFrame) -> pd.DataFrame:
    
    # user_content['converted_text'] = user_content['content_text'].title()
    user_content['converted_text'] = user_content['content_text'].apply(lambda x: x.title())
    return user_content.rename(columns={'content_text': 'original_text'})
```
['Pandas']