Adding Functionality table for go SDK

[domgreen]

What type of PR is this?

/kind documentation

What this PR does / Why we need it:

• Adding table for go SDK.
• Fixing comment nits https://golang.org/doc/effective_go#commentary

Special notes for your reviewer:

• 🥇 < medal for you

[agones-bot]

Build Succeeded 👏

Build Id: 1cc2c1cf-346c-42cf-839d-3c2dc2ff6152

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

• image: gcr.io/agones-images/agones-controller:1.14.0-6ab8b9e
• image: gcr.io/agones-images/agones-ping:1.14.0-6ab8b9e
• Linux C++ SDK (build): agonessdk-1.14.0-6ab8b9e-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.14.0-6ab8b9e.zip

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

• https://6ab8b9e-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/2081/head:pr_2081 && git checkout pr_2081
• helm install ./install/helm/agones --namespace agones-system --name agones --set agones.image.tag=1.14.0-6ab8b9e

[agones-bot]

Build Succeeded 👏

Build Id: def88cdf-911f-41ba-b670-7e200fff3c1a

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

• image: gcr.io/agones-images/agones-controller:1.15.0-cd3e10b
• image: gcr.io/agones-images/agones-ping:1.15.0-cd3e10b
• Linux C++ SDK (build): agonessdk-1.15.0-cd3e10b-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.15.0-cd3e10b.zip

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

• https://cd3e10b-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/2081/head:pr_2081 && git checkout pr_2081
• helm install ./install/helm/agones --namespace agones-system --name agones --set agones.image.tag=1.15.0-cd3e10b

[google-oss-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

The full list of commands accepted by this bot can be found here.

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Needs approval from an approver in each of these files:

• OWNERS [roberthbailey]

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