Fix broken links in the website.

[roberthbailey]

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

What this PR does / Why we need it: CI is failing and the live website has two broken links.

Which issue(s) this PR fixes:

Closes #

Special notes for your reviewer:

[agones-bot]

Build Failed 😱

Build Id: cb426aea-c142-45f2-a11c-0a20b94bdc2c

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• Cloud Build log download

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[roberthbailey]

--- FAIL: TestAutoscalerStressCreate (345.95s)
    framework.go:284: 
        	Error Trace:	framework.go:284
        	            				fleetautoscaler_test.go:355
        	            				fleetautoscaler_test.go:363
        	Error:      	Received unexpected error:
        	            	timed out waiting for the condition
        	Test:       	TestAutoscalerStressCreate
        	Messages:   	error waiting for fleet condition on fleet: simple-fleet-x6988
FAIL

[agones-bot]

Build Succeeded 👏

Build Id: 243f3f2c-58bf-4ce9-8ca0-5b2a75e74d5a

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

• image: gcr.io/agones-images/agones-controller:1.20.0-dbf2b45
• image: gcr.io/agones-images/agones-ping:1.20.0-dbf2b45
• Linux C++ SDK (build): agonessdk-1.20.0-dbf2b45-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.20.0-dbf2b45.zip

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

• https://dbf2b45-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/2405/head:pr_2405 && git checkout pr_2405
• helm install ./install/helm/agones --namespace agones-system --name agones --set agones.image.tag=1.20.0-dbf2b45

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cindy52, roberthbailey

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• OWNERS [roberthbailey]

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