Improve comments

[FauziAkram]

Improve comments.
Non-Functional

[cj5716]

I think you need to write "No functional change" to pass CI currently. Even if it doesn't, I still think it would be good to follow normal procedure.

[Disservin]

I think you need to write "No functional change" to pass CI currently. Even if it doesn't, I still think it would be good to follow normal procedure.

you shouldnt need to right now

[dav1312]

If you are updating comments, please take this opportunity to update:

Stockfish/src/search.cpp

Lines 103 to 106 in 70ba9de

	// Skill structure is used to implement strength limit. If we have an uci_elo then
	// we convert it to a suitable fractional skill level using anchoring to CCRL Elo
	// (goldfish 1.13 = 2000) and a fit through Ordo derived Elo for a match (TC 60+0.6)
	// results spanning a wide range of k values.

[FauziAkram]

@dav1312 Done.