Update contributor guide to include language from the template

[brianwarner]

Signed-off-by: Brian Warner brian.warner2@fmr.com

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name: Update the contributor guide
about: Merges in language from the new standard template

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What does this PR do?

Fidelity is updating and standardizing our GitHub presence. This PR adds various guidelines from the default contributor guide.

Checklist

N/A for this PR (governance related)

• Did you adhere to PEP-8 standards?
• Did you run black and isort prior to submitting your PR?
• Does your PR pass all existing unit tests?
• Did you add associated unit tests for any additional functionality?
• Did you provide code documentation (Google Docstring format) whenever possible, even for simple functions or classes?
• Did you add necessary documentation to the website?

Review

Request will go to reviewers to approve for merge.

[coveralls]

Pull Request Test Coverage Report for Build 3524343531

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.2%) to 96.096%

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Totals
Change from base Build 2511258184:	0.2%
Covered Lines:	2240
Relevant Lines:	2331

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💛 - Coveralls