content: Add link to the Docsy docs in the contribution guidelines

[timflannagan]

Update the contribution guidelines and add a link to the Docsy documentation instead of the broken [Docsy user guide](wherever it goes) reference that's currently being deployed.

[timflannagan]

@hasbro17 Any idea on how to get rid of that Travis CI check? I migrated all of the CI tests to GH actions a couple of months back, so we no longer require a Travis CI configuration for this repository. The last time I talked with the team, it sounded like you had set up Travis for this repository?

[timflannagan]

I added a second commit that changes the list formatting so the bullet points get properly rendered.

Here is the previous version:

• https://olm.operatorframework.io/docs/contribution-guidelines/

Here is the deploy preview that contains the fixes:

• https://deploy-preview-160--operator-lifecycle-manager.netlify.app/docs/contribution-guidelines/

I can move these changes to a separate PR if we have any strong opinions about combining these changes.

[hasbro17]

@timflannagan Sounds like you already got rid .travis.yml when you moved it over to GH actions https://github.com/operator-framework/olm-docs/pull/103 But I think we had a status check for it in the branch protection rule for master. I've just removed it from there so it should no longer show up anymore.

[anik120]

/approve

[openshift-ci[bot]]

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