[nit] Minor formatting error fix

[gao-yuan-hangzhou]

Use single quote in f-string...

Thanks Jeremy for the amazing post. I enjoyed reading it and playing with the code.

[Jah-yee]

Good day!

I noticed this formatting issue. Here's the fix for lines 184 and 187 in src/main.py:

# Before:
print(f"Saving results to {os.path.join("results", filename)}")

# After:
print(f"Saving results to {os.path.join('results', filename)}")

The issue is using double quotes inside f-strings which should use single quotes.

Thank you for your work on this amazing project!

Warmly,
RoomWithOutRoof