Update Avi Kubernetes Operator (AKO) versions in the list of Gateway API implementations

[pkoshtavmware]

What type of PR is this?
/kind documentation

What this PR does / why we need it:
Avi Kubernetes Operator(AKO) 1.13.1 now supports Gateway API v1.0.0. This PR includes version changes and documentation link changes in the list of implementations for AKO

Which issue(s) this PR fixes:
Fixes #

Does this PR introduce a user-facing change?:

NONE

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: pkoshtavmware
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[k8s-ci-robot]

Hi @pkoshtavmware. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[akshayhavile]

@pkoshtavmware please change ... VMware NSX Advanced Load Balancer to ... VMware AVI Load Balancer