Update README.md

[phershbe]

"Long-Term Support" should have a capital "T" according to most style guides if we're making it a proper noun as we are here. It's obviously not super important in the grand scope of the project, but it makes things appear more formal and correct.

[Trott]

TL;DR: Let's standardize on Long Term Support

Details:

Our style guide for documentation is here: https://github.com/nodejs/node/blob/4c508f51c094085eeb67847b1d2c41b4cd0428dc/doc/guides/doc-style-guide.md

It indicates that for things (like this) that are not covered by it, we follow the Microsoft Style Guide.

The Microsoft Style Guide is a little ambiguous on this. From https://docs.microsoft.com/en-us/style-guide/punctuation/dashes-hyphens/hyphens#capitalization-in-hyphenated-compound-words:

Capitalize any part of a hyphenated compound word that would be capitalized if there were no hyphen. 

 🤔

But we can get a little more guidance perhaps by looking at actual Microsoft docs. They appear to favor Long Term Support but it's not completely consistent.

Examples using Long Term Support:

https://dotnet.microsoft.com/platform/support/policy/dotnet-core
https://dotnet.microsoft.com/platform/support/policy
https://devblogs.microsoft.com/dotnet/net-core-releases-and-support/
https://devblogs.microsoft.com/dotnet/net-core-2-1-will-reach-end-of-support-on-august-21-2021/

Examples using Long-Term Support:

https://techcommunity.microsoft.com/t5/internet-of-things/new-lts-release-long-term-support-for-azure-iot-hub-sdk-for-net/ba-p/2323148
https://appsource.microsoft.com/en-us/marketplace/consulting-services/dyn365pros.dyn365assist

Examples using long-term support:

https://techcommunity.microsoft.com/t5/windows-it-pro-blog/the-next-windows-10-long-term-servicing-channel-ltsc-release/ba-p/2147232
https://azure.microsoft.com/en-us/updates/csharp-and-java-new-lts-branch/

Examples using long term support:

https://azure.microsoft.com/en-us/updates/the-azure-iot-nodejs-sdk-releases-a-new-long-term-support-lts-release/

Conclustion: Guidance is uncertain stylistically. However, we use Long Term Support more often than the other variants, so let's just standardize on that.

[Trott]

LGTM, but would prefer Long Term Support (see comment).

[phershbe]

@Trott I wanted to comment under your post, but I guess I can't because it was also an approval, I'm new here and am still learning. I agree that we should standardize on "Long Term Support", it's the most common way used by Microsoft and other various companies across the top pages of Google whether you search for "Long-Term Support" or "Long Term Support". @bl-ue Thank you for raising the hyphen issue on top of the capitalization issue that I raised, that was the goal anyway to make the documentation more formal and proper.

[Trott]

@nodejs/documentation

[github-actions]

Fast-track has been requested by @Trott. Please 👍 to approve.

[Trott]

Landed in 16ae378.

Thanks for the contribution! 🎉