Fix function-calc-no-unspaced-operator false negatives (#7655)

Co-authored-by: Romain Menke <11521496+romainmenke@users.noreply.github.com>

.changeset/happy-laws-attack.md

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+"stylelint": minor
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+Fixed: `function-calc-no-unspaced-operator` false negatives for three or more operands

.changeset/witty-vans-yawn.md

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+"stylelint": minor
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+Fixed: `function-calc-no-unspaced-operator` false negatives for newer math functions that receive multiple arguments

lib/rules/function-calc-no-unspaced-operator/README.md

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 # function-calc-no-unspaced-operator
 
-Disallow invalid unspaced operator within math functions that accept a single [`<calc-sum>`](https://www.w3.org/TR/css-values-4/#typedef-calc-sum) value, such as `calc()` or `abs()`.
+Disallow invalid unspaced operator within [math functions](https://www.w3.org/TR/css-values-4/#calc-syntax), such as `calc()` or `min()`.
 
 <!-- prettier-ignore -->
 ```css