improved wording, consolidation of info, BLTouch warning

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clarified BLTouch calculation & changed comment delimitters/flags

I found it hard to pickout the various sections in this area so I
changed most comments from // style to /** ... */

Made the BLTouch calculation simpler and clarified the units of measure
for the result.

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add changes to example configurations

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add TinyBoy2 to this PR & add BLTouch Delay