Fix small typo in comments

[aLekSer]

There was a typos in GameServer term.

One more could be found in proto. This would go into another PR.

agones/proto/sdk/sdk.proto

Lines 47 to 48 in 3bb4e1f

	// Send a Empty every d Duration to declare that this GameSever is healthy
	rpc Health (stream Empty) returns (Empty) {

What type of PR is this?

Uncomment only one /kind <> line, hit 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:

Which issue(s) this PR fixes:

Closes #

Special notes for your reviewer:

[agones-bot]

Build Failed 😱

Build Id: eaba6e7b-3c50-41af-a081-5ddaeae3ccd0

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[aLekSer]

site/docs/faq/index.html
  hash does not exist --- site/docs/faq/index.html --> /site/docs/guides/client-sdks/rest/#setlabel-key-value
  hash does not exist --- site/docs/faq/index.html --> /site/docs/guides/client-sdks/rest/#setannotation-key-value
  hash does not exist --- site/docs/faq/index.html --> /site/docs/guides/client-sdks/rest/#setlabel-key-value
  hash does not exist --- site/docs/faq/index.html --> /site/docs/guides/client-sdks/rest/#setannotation-key-value
========================================================================
✘✘✘ failed in 949.115641ms
4 errors in 106 documents

[markmandel]

I've seen that one a few times as well, and I'm not sure why.

Something fails when creating the site somehow?

[google-oss-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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[google-oss-robot]

New changes are detected. LGTM label has been removed.

[aLekSer]

This anchor does not exist
https://agones.dev/site/docs/guides/client-sdks/rest/#setlabel-key-value

[agones-bot]

Build Succeeded 👏

Build Id: 2d46b6c3-be3b-4b7f-968e-254f8f9f875c

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

• image: gcr.io/agones-images/agones-controller:1.6.0-faa33b9
• image: gcr.io/agones-images/agones-sdk:1.6.0-faa33b9
• image: gcr.io/agones-images/agones-ping:1.6.0-faa33b9
• Linux C++ SDK (build): agonessdk-1.6.0-faa33b9-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.6.0-faa33b9.zip

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

• https://faa33b9-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/GoogleCloudPlatform/agones.git pull/1548/head:pr_1548 && git checkout pr_1548
• helm install ./install/helm/agones --namespace agones-system --name agones --set agones.image.tag=1.6.0-faa33b9