GKEAutopilotExtendedDurationPods: Fix embarassing typo preventing use

[zmerlynn]

Copypasta gone wrong.

Towards #3386

[agones-bot]

Build Succeeded 👏

Build Id: 9755a4c1-241f-488f-9e00-292e96d2d010

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:1.38.0-dev-92399df-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-extensions:1.38.0-dev-92399df-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.38.0-dev-92399df-linux-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.38.0-dev-92399df-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.38.0-dev-92399df-amd64
• Linux C++ SDK (build): agonessdk-1.38.0-dev-92399df-amd64-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.38.0-dev-92399df-amd64.zip

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

• https://92399df-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/3596/head:pr_3596 && git checkout pr_3596
• helm install agones ./install/helm/agones --namespace agones-system --set agones.image.registry=us-docker.pkg.dev/agones-images/ci --set agones.image.tag=1.38.0-dev-92399df-amd64