Fix typo

[viiicky]

No description provided.

[pep8speaks]

Hello @viiicky! Thanks for submitting the PR.

• In the file flask_jwt_simple/utils.py, following are the PEP8 issues :

Line 44:80: E501 line too long (87 > 79 characters)

[coveralls]

Coverage remained the same at 100.0% when pulling 89f16ef on viiicky:patch-1 into 5dacfab on vimalloc:master.

[vimalloc]

thanks for contributing!