KEP template: add guidance for line breaks

[pohly]

The last three new KEPs that I started to review all didn't use line-wrapping, including one from an experienced Kubernetes contributor. Apparently we need better guidance.

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[pohly]

And to demonstrate semantic line breaks, this last sentence should be its own line :-)

https://github.com/kubernetes/enhancements/compare/d00bd0651950b0bda87e2c4cab9e0e5268325091..1d7c1772d320cd0b00dcbd275d400a71f4f00eb5

[dom4ha]

Having style guidelines would be great (I completely haven't payed attention to it).
Is there a recommended line width or just semantic line breaks recommendation? Following just semantic, I'd format this entry like this:

Wrap long lines instead of using one line per paragraph.
When updating, change as few lines as possible. This helps with anchoring review comments.
Semantic line breaks (https://sembr.org/) are useful.

[pohly]

You are right, strict sembr would not reflow the first two sentences.

I think just raising awareness should be enough. I don't want to be too pedantic and in particular, don't want reviewers to spend time on enforcing some kind of style guide.

[kikisdeliveryservice]

This looks good, but as noted in other PR, let's just hold until after enhancements freeze.

/hold