Update test-and-deploy-python-application-to-heroku.md
See the general Documentation guidelines http://docs.gitlab.com/ce/development/doc_styleguide.html
What does this MR do?
Corrects a small spelling issue.
Edited by username-removed-1580234
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
See the general Documentation guidelines http://docs.gitlab.com/ce/development/doc_styleguide.html
Corrects a small spelling issue.