[AIRFLOW-2248] Fix wrong param name in RedshiftToS3Transfer doc

[sekikn]

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JIRA

• My PR addresses the following Airflow JIRA issues and references them in the PR title. For example, "[AIRFLOW-XXX] My Airflow PR"
  • https://issues.apache.org/jira/browse/AIRFLOW-2248

Description

• Here are some details about my PR, including screenshots of any UI changes:

The parameter 'unload_options' is wrongly referred to as 'options'
in the RedshiftToS3Transfer docstring. This PR fixes it.

Tests

• My PR adds the following unit tests OR does not need testing for this extremely good reason:

This PR does not need testing since it's documentation fix. I ran docs/build.sh locally and confirmed the document is generated as expected.

Commits

• My commits all reference JIRA issues in their subject lines, and I have squashed multiple commits if they address the same issue. In addition, my commits follow the guidelines from "How to write a good git commit message":

  1. Subject is separated from body by a blank line
  2. Subject is limited to 50 characters
  3. Subject does not end with a period
  4. Subject uses the imperative mood ("add", not "adding")
  5. Body wraps at 72 characters
  6. Body explains "what" and "why", not "how"

• Passes git diff upstream/master -u -- "*.py" | flake8 --diff