Cleanup prereqs and add links to install.md page

[a-mccarthy]

What type of PR is this?

/kind documentation

What this PR does / why we need it:

Which issue(s) this PR is related to:

• Cleans up some links to the wiki install page to point to new install page, and docs folder
• removed dra feature gate details from prereqs page, since the min k8s version is now 1.34+ and its enabled by default.

Special notes for your reviewer:

Does this PR introduce a user-facing change?

NONE

Additional documentation (design docs, usage docs, etc.):

Checklist

• make check test passes locally
• make check-generate passes if api/ changed (CRDs, deepcopy, informers, listers, clientset)
• make check-modules passes if go.mod / go.sum changed
• Tests added or updated for the change
• Helm chart (deployments/helm) updated if flags, RBAC, or defaults changed

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[k8s-ci-robot]

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[a-mccarthy]

I was thinking in the short term i was thinking we can point to the /docs folder instead of the docs folder. and then update the links when we have the website ready. Does this work?

I dont have access to the Wiki pages itself, but we should update the install and upgrade sections to point folks to the new /docs folder.

[bmozaffa]

LGTM

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: a-mccarthy, bmozaffa
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