[AIRFLOW-XXXX] Fix typo commiter => committer (#7392)
[AIRFLOW-XXXX] Fix typo commiter => committer (#7392)

https://github.com/apache/airflow-site/pull/247
(cherry picked from commit 133948532dd4bdf4d618add89e7c9acba34bd1bc)

owlabs/incubator-airflow,owlabs/incubator-airflow,owlabs/incubator-airflow,owlabs/incubator-airflow