Readme update

[nnti]

Purpose

Updated README slack webhook creation process.

Linked Issues to Close

https://qmacbis.atlassian.net/jira/software/c/projects/OY2/boards/216?modal=detail&selectedIssue=OY2-17776

Approach

N/A

Learning

N/A

Assorted Notes/Considerations

N/A

Pull Request Creator Checklist

• [x] This PR has an associated issue or issues.
• [x] The associated issue(s) are linked above.
• [x] This PR meets all acceptance criteria for those issues.
• [x] This PR and linked issue(s) are adequately documented
• [x] This PR and linked issues(s) are a complete description of the changeset; an individual or team should be able to understand the issue(s) and changes by reading through this PR and it's links, with no further interaction.
• [x] Someone has been assigned this PR.
• [x] At least one person has been marked as reviewer on this PR.

Pull Request Reviewer/Assignee Checklist

• [ ] This PR has an associated issue or issues.
• [ ] The associated issue(s) are linked above.
• [ ] This PR meets all acceptance criteria for those issues.
• [ ] This PR and linked issue(s) are adequately documented
• [ ] This PR and linked issues(s) are a complete description of the changeset; an individual or team should be able to understand the issue(s) and changes by reading through this PR and it's links, with no further interaction.

[codeclimate[bot]]

Code Climate has analyzed commit 39bd0bbc and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 25.9% (0.0% change).

View more on Code Climate.