chore: update email

Author: BFergerson

setup.py

@@ -6,7 +6,7 @@
       description='Source++ Python Probe',
       url='https://github.com/sourceplusplus/probe-python',
       author='Source++',
-      author_email='hello@sourceplusplus.com',
+      author_email='hello@sourceplus.plus',
       license='Apache License, Version 2.0',
       packages=setuptools.find_packages(),
       install_requires=['vertx-eventbus-client>=1.0.0',