fix: rename syntax errors

[ojeytonwilliams]

Checklist:

• I have read freeCodeCamp's contribution guidelines.
• My pull request has a descriptive title (not a vague title like Update index.md)

Updates the error formatter so that it renames the File when there is a syntax error.

Given the code var=

>>> Traceback (most recent call last):
  File "<exec>", line 1
    var=
        ^
SyntaxError: invalid syntax

becomes

>>> Traceback (most recent call last):
  File "main.py", line 1
    var=
        ^
SyntaxError: invalid syntax

[zairahira]

Sharing for reference, works perfectly on learn: