Fixed a typo in zulip_change_commit.py
MODIFY
integrations/perforce/zulip_change-commit.py
integrations/perforce/zulip_change-commit.py
'''Zulip notification change-commit hook.
In Perforce, The "change-commit" trigger is fired after a metadata has been
-created, files have been transferred, and the changelist comitted to the depot
+created, files have been transferred, and the changelist committed to the depot
database.
This specific trigger expects command-line arguments in the form:

Fixed a typo in zulip_change_commit.py