docs: Fix a few typos

[timgates42]

There are small typos in:

• code2flow/javascript.py
• code2flow/php.py
• code2flow/python.py
• code2flow/ruby.py
• tests/test_code/py/pytz/tzinfo.py

Fixes:

• Should read cleaner rather than clearner.
• Should read correct rather than corrent.
• Should read ambiguous rather than ambigous.

Semi-automated pull request generated by https://github.com/timgates42/meticulous/blob/master/docs/NOTE.md

[scottrogowski]

Thank you!