Fix failing docs build on Master

[kaxil]

#14030 caused this issue

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In case of fundamental code change, Airflow Improvement Proposal (AIP) is needed.
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[kaxil]

Tested it locally

#################### [1/1] apache-airflow-providers-tableau ####################
#################### Building docs: apache-airflow-providers-tableau ####################
Executing cmd:  sphinx-build -T --color -b html -d /opt/airflow/docs/_doctrees/docs/apache-airflow-providers-tableau -c /opt/airflow/docs -w /tmp/tmp1pee13_f /opt/airflow/docs/apache-airflow-providers-tableau /opt/airflow/docs/_build/docs/apache-airflow-providers-tableau/latest
The output is hidden until an error occurs.
#################### Check spelling: apache-airflow-providers-tableau ####################
Executing cmd:  sphinx-build -W --color -T -b spelling -c /opt/airflow/docs -d /opt/airflow/docs/_doctrees/docs/apache-airflow-providers-tableau /opt/airflow/docs/apache-airflow-providers-tableau /tmp/tmpxyhbegbt
The output is hidden until an error occurs.