Fix the broken example yaml

[gongmax]

What type of PR is this?

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/kind breaking

/kind bug

/kind cleanup
/kind documentation
/kind feature
/kind hotfix

What this PR does / Why we need it:

Which issue(s) this PR fixes:

Closes #

Special notes for your reviewer:

[agones-bot]

Build Succeeded 👏

Build Id: c251c1b2-28e8-47ca-84d8-d9386181b4e9

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:1.30.0-e77c591-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.30.0-e77c591-linux-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.30.0-e77c591-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.30.0-e77c591-amd64
• Linux C++ SDK (build): agonessdk-1.30.0-e77c591-amd64-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.30.0-e77c591-amd64.zip

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

• https://e77c591-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/2956/head:pr_2956 && git checkout pr_2956
• helm install agones ./install/helm/agones --namespace agones-system --agones.image.release=us-docker.pkg.dev/agones-images/ci --set agones.image.tag=1.30.0-e77c591-amd64

[google-oss-prow]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: gongmax, zmerlynn
Once this PR has been reviewed and has the lgtm label, please assign roberthbailey for approval by writing /assign @roberthbailey in a comment. For more information see the Kubernetes Code Review Process.

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[agones-bot]

Build Failed 😱

Build Id: 295616b0-a4ee-4a54-8bd6-7ed1dce60539

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[agones-bot]

Build Succeeded 👏

Build Id: d424a1f7-6923-4cac-9491-8e4e9582bc7f

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:1.30.0-d8fbc7e-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.30.0-d8fbc7e-linux-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.30.0-d8fbc7e-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.30.0-d8fbc7e-amd64
• Linux C++ SDK (build): agonessdk-1.30.0-d8fbc7e-amd64-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.30.0-d8fbc7e-amd64.zip

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

• https://d8fbc7e-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/2956/head:pr_2956 && git checkout pr_2956
• helm install agones ./install/helm/agones --namespace agones-system --agones.image.release=us-docker.pkg.dev/agones-images/ci --set agones.image.tag=1.30.0-d8fbc7e-amd64