[css-align-3][css-text-decor-4][fill-stroke-3] Add <line-width> to appropriate properties. w3c#3720

Author: tabatkins

css-align-3/Overview.bs

@@ -2054,7 +2054,7 @@ Row and Column Gutters: the 'row-gap' and 'column-gap' properties</h3>
 
 	<pre class='propdef'>
 	Name: row-gap, column-gap
-	Value: normal | <<length-percentage [0,∞]>>
+	Value: normal | <<length-percentage [0,∞]>> | <<line-width>>
 	Initial: normal
 	Applies to: <a>multi-column containers</a>, <a>flex containers</a>, <a>grid containers</a>
 	Inherited: no
@@ -2079,6 +2079,7 @@ Row and Column Gutters: the 'row-gap' and 'column-gap' properties</h3>
 
 	<dl dfn-type=value dfn-for="row-gap, column-gap, gap">
 		: <<length-percentage [0,∞]>>
+		: <<line-width>>
 		::
 			Specifies a gap between “rows” or “columns”,
 			as defined by the layout modes to which it applies;

css-text-decor-4/Overview.bs

@@ -327,7 +327,7 @@ Text Decoration Line Thickness: the 'text-decoration-thickness' property</h3>
 
 	<pre class="propdef">
 	Name: text-decoration-thickness
-	Value: auto | from-font | <<length-percentage>>
+	Value: auto | from-font | <<length-percentage>> | <<line-width>>
 	Initial: auto
 	Applies to: all elements
 	Inherited: no
@@ -359,6 +359,7 @@ Text Decoration Line Thickness: the 'text-decoration-thickness' property</h3>
 			otherwise behaves as ''text-decoration-thickness/auto''.
 
 		<dt><dfn><<length-percentage>></dfn>
+		<dt><dfn><<line-width>></dfn>
 		<dd>
 			A length value specifies the thickness of text decoration lines as a fixed length.
 

fill-stroke-3/Overview.bs

@@ -577,7 +577,7 @@ Stroke Geometry {#stroke-geometry}
 
 	<pre class="propdef">
 		Name: stroke-width
-		Value: <<length-percentage>>#
+		Value: [ <<length-percentage>> | <<line-width>> ]#
 		Initial: 1px
 		Applies to: text and <a>SVG shapes</a>
 		Inherited: yes