add Related resources to more docs (#22883)

[ti-chi-bot]

This is an automated cherry-pick of #22883

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[gemini-code-assist]

Code Review

This pull request adds a "Related resources" section to various documentation files, incorporating links to relevant blog posts, labs, and videos to enhance user learning. A critical issue was found in tidb-resource-control-ru-groups.md, which contains unresolved git conflict markers that must be removed before merging.

[gemini-code-assist]

The file contains unresolved git conflict markers. Please resolve the conflict by choosing the appropriate version of the RFC link and removing the markers before merging.

Suggested change

	<<<<<<< HEAD
	* [RESOURCE GROUP RFC](https://github.com/pingcap/tidb/blob/master/docs/design/2022-11-25-global-resource-control.md)
	=======
	* [RESOURCE GROUP RFC](https://github.com/pingcap/tidb/blob/release-8.5/docs/design/2022-11-25-global-resource-control.md)
	## Related resources
	<RelatedResources>
	<ResourceCard title="TiDB Admin Lab 5: Using Resource Control with Mixed Workloads" type="lab" link="https://labs.tidb.io/labs/demo_006" imgSrc="https://lab-static.pingcap.com/quick-demo/dba_303_ch05_en.png" duration="90 mins" />
	</RelatedResources>
	>>>>>>> ae49837df5 (add Related resources to more docs (#22883))
	* [RESOURCE GROUP RFC](https://github.com/pingcap/tidb/blob/master/docs/design/2022-11-25-global-resource-control.md)
	## Related resources
	<RelatedResources>
	<ResourceCard title="TiDB Admin Lab 5: Using Resource Control with Mixed Workloads" type="lab" link="https://labs.tidb.io/labs/demo_006" imgSrc="https://lab-static.pingcap.com/quick-demo/dba_303_ch05_en.png" duration="90 mins" />
	</RelatedResources>

References

1. Unresolved conflict markers are technical errors that prevent proper document rendering and must be resolved before merging.