[css-values-4] Add <rounding-strategy> syntax to defininition list

[pyoor]

The <rounding-strategy> syntax is missing from the following list:

csswg-drafts/css-values-4/Overview.bs

Lines 3745 to 3767 in 9c1c802

	<<round()>> = round( <<rounding-strategy>>?, <<calc-sum>>, <<calc-sum>> )
	<<mod()>> = mod( <<calc-sum>>, <<calc-sum>> )
	<<rem()>> = rem( <<calc-sum>>, <<calc-sum>> )
	<<sin()>> = sin( <<calc-sum>> )
	<<cos()>> = cos( <<calc-sum>> )
	<<tan()>> = tan( <<calc-sum>> )
	<<asin()>> = asin( <<calc-sum>> )
	<<acos()>> = acos( <<calc-sum>> )
	<<atan()>> = atan( <<calc-sum>> )
	<<atan2()>> = atan2( <<calc-sum>>, <<calc-sum>> )
	<<pow()>> = pow( <<calc-sum>>, <<calc-sum>> )
	<<sqrt()>> = sqrt( <<calc-sum>> )
	<<hypot()>> = hypot( <<calc-sum>># )
	<<log()>> = log( <<calc-sum>>, <<calc-sum>>? )
	<<exp()>> = exp( <<calc-sum>> )
	<<abs()>> = abs( <<calc-sum>> )
	<<sign()>> = sign( <<calc-sum>> )
	<dfn>&lt;calc-sum></dfn> = <<calc-product>> [ [ '+' | '-' ] <<calc-product>> ]*
	<dfn>&lt;calc-product></dfn> = <<calc-value>> [ [ '*' | '/' ] <<calc-value>> ]*
	<dfn>&lt;calc-value></dfn> = <<number>> | <<dimension>> | <<percentage>> |
	<<calc-constant>> | ( <<calc-sum>> )
	<dfn>&lt;calc-constant></dfn> = e | pi | infinity | -infinity | NaN
	</pre>

For completeness, we should include:
<rounding-strategy> = <dfn>&lt;rounding-strategy></dfn> = nearest | up | down | to-zero

[SebastianZ]

It can't be specified with <dfn> because it's already defined in the prose. So it should probably also like to the text.

Sebastian

[fantasai]

Fixed, thanks for the report!