doc: Update prerequisite: pipelines operator is no longer installed by gitops operator

[wtam2018]

What type of PR is this?

Uncomment only one /kind line, and delete the rest. For example, > /kind bug would simply become: /kind bug

/kind bug /kind cleanup /kind failing-test /kind enhancement /kind documentation /kind code-refactoring

What does this PR do / why we need it:

This PR updates the documentation where it talks about day1 prerequisite. GitOps operator no longer installs Pipelines Operator since v1.1.1

Have you updated the necessary documentation?

• [x] Documentation update is required by this PR.
• [x] Documentation has been updated.

Which issue(s) this PR fixes:

Fixes #?

How to test changes / Special notes to the reviewer: Install GitOps operator on a fresh cluster and validate that Pipelines Operator is not installed automatically. As a result, day1 prerequisite explicitly instructs users to install the Pipelines Operator from OperatorHub.

[openshift-ci[bot]]

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[dewan-ahmed]

There's a small typo in this file name (extra space before the extension). Rest of the PR looks good @wtam2018

[chetan-rns]

https://github.com/redhat-developer/kam/blob/0d30009bb8d2c18c3449c4b37da1a3edaa41aa55/pkg/cmd/bootstrap.go#L324

The bootstrap cmd asks users to install the GitOps operator if the pipelines operator is not found. We can now ask them to install the pipelines operator direclty

[dewan-ahmed]

/lgtm