Update project-settings.md with updated "High availability" search power label

[petegaleotti]

Changing the name of the highest search power setting from "High-throughput" to "High availability", which is its current label in the product.

Summary

Generative AI disclosure

1. Did you use a generative AI (GenAI) tool to assist in creating this contribution?

• Yes
• No

[petegaleotti]

@lcawl FYI, in case there are other places this label needs to be udpated.

[github-actions]

Vale Linting Results

Summary: 1 suggestion found

💡 Suggestions (1)

File	Line	Rule	Message
deploy-manage/deploy/elastic-cloud/project-settings.md	55	Elastic.FutureTense	'will be' might be in future tense. Write in the present tense to describe the state of the product as it is now.

[github-actions]

🔍 Preview links for changed docs

• deploy-manage/deploy/elastic-cloud/project-settings.md

[wajihaparvez]

Hi @petegaleotti! Looks like there are three other mentions of "high-throughput" in the docs, but none of them are used as the name of the setting, so maybe they don't need to be changed. Linking the pages here so you can check just in case:

• Cluster state (line 32)
  
• Tune for indexing speed (line 16)
• Tune for search spped (line 16)

LGTM, approving to unblock

[petegaleotti]

@wajihaparvez I reviewed those three pages and they're not affected by this change. No further changes necessary. Thanks!