Fixed a typo bug in main WSGI script.
Fixed a typo bug in main WSGI script.

lollerbus/python-github-webhooks,Tech-Twnel/python-webhooks,irtnog/python-github-webhooks,curious-attempt-bunny/github-webhooks-docker-deploy,Tech-Twnel/python-webhooks,curious-attempt-bunny/github-webhooks-docker-deploy,carlos-jenkins/python-github-webhooks,controlzee/python-github-webhooks