[css-values] add definite articles

Author: tabatkins

css-values-4/Overview.bs

@@ -1786,19 +1786,19 @@ Type Checking</h4>
 		<dl class=switch>
 			: <<number>>
 			: <<integer>>
-			:: [=CSSNumericValue/type=] is «[ ]» (empty map)
+			:: the [=CSSNumericValue/type=] is «[ ]» (empty map)
 			: <<length>>
-			:: [=CSSNumericValue/type=] is «[ "length" → 1 ]»
+			:: the [=CSSNumericValue/type=] is «[ "length" → 1 ]»
 			: <<angle>>
-			:: [=CSSNumericValue/type=] is «[ "angle" → 1 ]»
+			:: the [=CSSNumericValue/type=] is «[ "angle" → 1 ]»
 			: <<time>>
-			:: [=CSSNumericValue/type=] is «[ "time" → 1 ]»
+			:: the [=CSSNumericValue/type=] is «[ "time" → 1 ]»
 			: <<frequency>>
-			:: [=CSSNumericValue/type=] is «[ "frequency" → 1 ]»
+			:: the [=CSSNumericValue/type=] is «[ "frequency" → 1 ]»
 			: <<resolution>>
-			:: [=CSSNumericValue/type=] is «[ "resolution" → 1 ]»
+			:: the [=CSSNumericValue/type=] is «[ "resolution" → 1 ]»
 			: <<flex>>
-			:: [=CSSNumericValue/type=] is «[ "flex" → 1 ]»
+			:: the [=CSSNumericValue/type=] is «[ "flex" → 1 ]»
 			: <<percentage>>
 			::
 				If, in the context in which the [=math function=] is placed,
@@ -1808,12 +1808,12 @@ Type Checking</h4>
 				the [=CSSNumericValue/type=] is determined as the other type.
 
 				Otherwise,
-				[=CSSNumericValue/type=] is «[ "percent" → 1 ]».
+				the [=CSSNumericValue/type=] is «[ "percent" → 1 ]».
 			: anything else
 			:: The [=math function=] is invalid.
-	       </dl>
+		</dl>
 
-	       In all cases, the associated [=percent hint=] is null.
+		In all cases, the associated [=percent hint=] is null.
 
 	* The [=CSSNumericValue/type=] of a ''calc()'' expression
 		is the [=CSSNumericValue/type=] of its contained expression.