Updated Databricks docs for correct jobs 2.1 API and links

[tfayyaz]

I have updated the Databricks provider and docs with the correct links for the jobs 2.1 API. I also renamed 2.0 to 2.1 as that is now used in the provider. None of the actual code was changed just comments and docs

[boring-cyborg]

Congratulations on your first Pull Request and welcome to the Apache Airflow community! If you have any issues or are unsure about any anything please check our Contribution Guide (https://github.com/apache/airflow/blob/main/CONTRIBUTING.rst)
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[alexott]

lgtm

[boring-cyborg]

Awesome work, congrats on your first merged pull request!