code style in util.py

[artyrian]

Please answer these questions before submitting your issue. Thanks!

1. What version of pyTelegramBotAPI are you using?
   4.7.0

2. What OS are you using?
   MacOS 12.5

3. What version of python are you using?
   python 3.8

I'm reading the util.py (https://github.com/eternnoir/pyTelegramBotAPI/blob/master/telebot/util.py)
and noticed a difference in style

so I suggest a small code style fix for quotes for example
cause it's would be better for readability and consistency

Some link for recomendation: https://docs.ckan.org/en/ckan-2.1.5/python-coding-standards.html#use-single-quotes

[artyrian]

so there is a small fix for this.
https://pastebin.com/K93a8PJW

is a pull requests may be opened for everyone?

[artyrian]

also fix commit in a forked repo:

artyrian@e03cdda

and created pr: #1756

[Badiboy]

Not an issue.