Fix: change method of removing trailing slash from url to support ios…

[olliescase]

… <17

Addresses #155

[olliescase]

Here's some testing I did of the function, trying to make sure I kept the same behaviour as the original regex.

If its just a / then it returns the original string. (/)
If its anything else that ends with a /, then it removes the last character (the /)
If it doesn't end in a /, then it returns the original string.

[manchenkoff]

Hey @olliescase, thanks a lot for the contribution! There is a slight formatting issue, please run pnpm lint:fix locally and run package check before committing the changes via pnpm validate.

[manchenkoff]

Closes #155