Remove Rolling Update on Ready warning in docs

[Kalaiselvi84]

What type of PR is this?

Uncomment only one /kind <> line, press enter to put that in a new line, and remove leading whitespace from that line:

/kind breaking
/kind bug
/kind cleanup
/kind documentation
/kind feature
/kind hotfix

/kind cleanup

What this PR does / Why we need it:

Which issue(s) this PR fixes:

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[agones-bot]

Build Succeeded 👏

Build Id: ebf56b4b-a067-4f76-803c-9d0b606cf81c

The following development artifacts have been built, and will exist for the next 30 days:

• image: us-docker.pkg.dev/agones-images/ci/agones-controller:1.33.0-4709f67-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.33.0-4709f67-linux-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.33.0-4709f67-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.33.0-4709f67-amd64
• Linux C++ SDK (build): agonessdk-1.33.0-4709f67-amd64-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.33.0-4709f67-amd64.zip

A preview of the website (the last 30 builds are retained):

• https://4709f67-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/3192/head:pr_3192 && git checkout pr_3192
• helm install agones ./install/helm/agones --namespace agones-system --set agones.image.registry=us-docker.pkg.dev/agones-images/ci --set agones.image.tag=1.33.0-4709f67-amd64

[agones-bot]

Build Failed 😱

Build Id: 486f882f-b6da-4750-b040-f64216371776

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To get permission to view the Cloud Build view, join the agones-discuss Google Group.

[agones-bot]

Build Succeeded 👏

Build Id: c3793a6d-7538-4c59-97e6-d6b138a147df

The following development artifacts have been built, and will exist for the next 30 days:

• image: us-docker.pkg.dev/agones-images/ci/agones-controller:1.33.0-86bbcec-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.33.0-86bbcec-linux-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.33.0-86bbcec-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.33.0-86bbcec-amd64
• Linux C++ SDK (build): agonessdk-1.33.0-86bbcec-amd64-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.33.0-86bbcec-amd64.zip

A preview of the website (the last 30 builds are retained):

• https://86bbcec-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/3192/head:pr_3192 && git checkout pr_3192
• helm install agones ./install/helm/agones --namespace agones-system --set agones.image.registry=us-docker.pkg.dev/agones-images/ci --set agones.image.tag=1.33.0-86bbcec-amd64

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Kalaiselvi84, markmandel

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• OWNERS [markmandel]

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[google-oss-prow]

New changes are detected. LGTM label has been removed.

[agones-bot]

Build Succeeded 👏

Build Id: 1caf4257-0f90-4271-9c22-9ee02b0b103e

The following development artifacts have been built, and will exist for the next 30 days:

• image: us-docker.pkg.dev/agones-images/ci/agones-controller:1.33.0-af20c3d-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.33.0-af20c3d-linux-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.33.0-af20c3d-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.33.0-af20c3d-amd64
• Linux C++ SDK (build): agonessdk-1.33.0-af20c3d-amd64-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.33.0-af20c3d-amd64.zip

A preview of the website (the last 30 builds are retained):

• https://af20c3d-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/3192/head:pr_3192 && git checkout pr_3192
• helm install agones ./install/helm/agones --namespace agones-system --set agones.image.registry=us-docker.pkg.dev/agones-images/ci --set agones.image.tag=1.33.0-af20c3d-amd64