Fixed issues in main.py: corrected file reading, JSON writing, and fu…

[DaJin-Kim]

Changes Made

• Corrected file reading and stripping of newline characters in lines 5-8.
• Improved JSON writing structure in lines 11-14 to ensure proper formatting.

Explanation

1. Lines 5-8: The previous implementation did not strip newline characters from each line, which could lead to incorrect data formatting. I added list comprehensions to strip the newline characters.
2. Lines 11-14: Ensured the JSON is properly formatted by adding an indent parameter to json.dump(), which makes the file more readable.